5 new wk assignments
Prb5
| Z Test of Hypothesis for the Proportion | DIRECTIONS: | Arrival Delay | (negatives mean it arrived early) | |||||
| On time flights. A flight is on time if it arrives no later than 15 minutes after the scheduled arrival time. Test the claim that made by CNN that 79.5% of flights are on time. Use a .05 significance level. | -32 | How many flights are in this sample? | ||||||
| Data | -25 | (1 point) | ||||||
| Null Hypothesis p= | Enter the hypothesis test amount. | (1 point) | -26 | |||||
| Level of Significance | Enter alpha value. | (1 point) | -6 | |||||
| Number of Items of Interest | Enter how many flights were on time. | (1 point) | 5 | How many flights were on time? | ||||
| Sample Size | Enter the sample size. | (1 point) | -15 | (1 point) | ||||
| -17 | ||||||||
| Intermediate Calculations | -36 | |||||||
| Sample Proportion | ERROR:#DIV/0! | Access this helpful video: | Video | -29 | ||||
| Standard Error | ERROR:#DIV/0! | -18 | ||||||
| Z Test Statistic | ERROR:#DIV/0! | -12 | ||||||
| State the results and interpret the results here: | -35 | |||||||
| Two-Tail Test | ( 4 points) | 2 | ||||||
| Lower Critical Value | ERROR:#NUM! | -33 | ||||||
| Upper Critical value | ERROR:#NUM! | -5 | ||||||
| p-Value | ERROR:#DIV/0! | 0 | ||||||
| ERROR:#DIV/0! | 0 | |||||||
| -1 | ||||||||
| Lower-Tail Test | These 2 sections are not needed in this problem because it is an equality test with 2 tails. | -33 | ||||||
| Lower Critical Value | ERROR:#NUM! | -5 | ||||||
| p-Value | ERROR:#DIV/0! | -14 | ||||||
| ERROR:#DIV/0! | -39 | |||||||
| -21 | ||||||||
| Upper-Tail Test | -32 | |||||||
| Upper Critical Value | ERROR:#NUM! | -5 | ||||||
| p-Value | ERROR:#DIV/0! | -32 | ||||||
| ERROR:#DIV/0! | -13 | |||||||
| -9 | ||||||||
| -19 | ||||||||
| 49 | ||||||||
| -30 | ||||||||
| -23 | ||||||||
| 14 | ||||||||
| -21 | ||||||||
| -32 | ||||||||
| 11 | ||||||||
| -23 | ||||||||
| 28 | ||||||||
| 103 | ||||||||
| -19 | ||||||||
| -5 | ||||||||
| -46 | ||||||||
| 13 | ||||||||
| -3 | ||||||||
| 13 | ||||||||
| 106 | ||||||||
| -34 | ||||||||
| -24 |
Prb6
| DIRECTIONS: | TEMP in F | ||||||||
| t Test for the Hypothesis of the Mean | Calculate sample mean and standard deviation from sample data. Test the claim that mean body temperature of the population is 98.6 degrees as is commonly believed. Use a .05 significance level. | 98.6 | What is the mean temperature? | ||||||
| Data | 98.6 | (1 point) | |||||||
| Null Hypothesis m= | Enter the hypothesis test amount. | (1 point) | 98 | ||||||
| Level of Significance | Enter alpha value. | (1 point) | 98 | ||||||
| Sample Size | Enter the sample size. | (1 point) | 99 | What is the standard deviation? | |||||
| Sample Mean | Enter the sample mean. | (1 point) | 98.4 | (1 point) | |||||
| Sample Standard Deviation | Enter the sample standard deviation. | (1 point) | 98.4 | ||||||
| 98.4 | |||||||||
| Intermediate Calculations | Access this helpful video: | Video | 98.4 | ||||||
| Standard Error of the Mean | ERROR:#DIV/0! | 98.6 | |||||||
| Degrees of Freedom | -1 | 98.6 | |||||||
| t Test Statistic | ERROR:#DIV/0! | State the results and interpret the results here: | 98.8 | ||||||
| ( 3 points) | 98.6 | ||||||||
| Two-Tail Test | 97 | ||||||||
| Lower Critical Value | ERROR:#NUM! | 97 | |||||||
| Upper Critical Value | ERROR:#NUM! | 98.8 | |||||||
| p-Value | ERROR:#DIV/0! | 97.6 | |||||||
| ERROR:#DIV/0! | 97.7 | ||||||||
| 98.8 | |||||||||
| Calculations Area | 98 | ||||||||
| For one-tailed tests: | 98 | ||||||||
| TDIST value | ERROR:#DIV/0! | 98.3 | |||||||
| 1-TDIST value | ERROR:#DIV/0! | 98.5 | |||||||
| 97.3 | |||||||||
| Lower-Tail Test | These 2 sections are not needed in this problem because it is an equality test with 2 tails. | 98.7 | |||||||
| Lower Critical Value | ERROR:#NUM! | 97.4 | |||||||
| p-Value | ERROR:#DIV/0! | 98.9 | |||||||
| ERROR:#DIV/0! | 98.6 | ||||||||
| 99.5 | |||||||||
| Upper-Tail Test | 97.5 | ||||||||
| Upper Critical Value | ERROR:#NUM! | 97.3 | |||||||
| p-Value | ERROR:#DIV/0! | 97.6 | |||||||
| ERROR:#DIV/0! | 98.2 | ||||||||
| 99.6 | |||||||||
| 98.7 | |||||||||
| 99.4 | |||||||||
| 98.2 | |||||||||
| 98 | |||||||||
| 98.6 | |||||||||
| 98.6 | |||||||||
| 97.2 | |||||||||
| 98.4 | |||||||||
| 98.6 | |||||||||
| 98.2 | |||||||||
| 98 | |||||||||
| 97.8 | |||||||||
| 98 | |||||||||
| 98.4 | |||||||||
| 98.6 | |||||||||
| 98.6 | |||||||||
| 97.8 | |||||||||
| 99 | |||||||||
| 96.5 | |||||||||
| 97.6 | |||||||||
| 98 | |||||||||
| 96.9 | |||||||||
| 97.6 | |||||||||
| 97.1 | |||||||||
| 97.9 | |||||||||
| 98.4 | |||||||||
| 97.3 | |||||||||
| 98 | |||||||||
| 97.5 | |||||||||
| 97.6 | |||||||||
| 98.2 | |||||||||
| 98.5 | |||||||||
| 98.8 | |||||||||
| 98.7 | |||||||||
| 97.8 | |||||||||
| 98 | |||||||||
| 97.1 | |||||||||
| 97.4 | |||||||||
| 99.4 | |||||||||
| 98.4 | |||||||||
| 98.6 | |||||||||
| 98.4 | |||||||||
| 98.5 | |||||||||
| 98.6 | |||||||||
| 98.3 | |||||||||
| 98.7 | |||||||||
| 98.8 | |||||||||
| 99.1 | |||||||||
| 98.6 | |||||||||
| 97.9 | |||||||||
| 98.8 | |||||||||
| 98 | |||||||||
| 98.7 | |||||||||
| 98.5 | |||||||||
| 98.9 | |||||||||
| 98.4 | |||||||||
| 98.6 | |||||||||
| 97.1 | |||||||||
| 97.9 | |||||||||
| 98.8 | |||||||||
| 98.7 | |||||||||
| 97.6 | |||||||||
| 98.2 | |||||||||
| 99.2 | |||||||||
| 97.8 | |||||||||
| 98 | |||||||||
| 98.4 | |||||||||
| 97.8 | |||||||||
| 98.4 | |||||||||
| 97.4 | |||||||||
| 98 | |||||||||
| 97 |
Prb7
| DIRECTIONS: | Departure Delay | (negatives mean it arrived early) | ||||||
| t Test for the Hypothesis of the Mean | On time flights. A flight is on time if it arrives no later than 15 minutes after the scheduled arrival time. Test the claim that the mean departure delay time for all flights is less than 12.0 minutes. Use .01 level of significance. | -2 | How many flights are in this sample? | |||||
| Data | -1 | (1 point) | ||||||
| Null Hypothesis m= | Enter the hypothesis test amount. | (1 point) | -2 | |||||
| Level of Significance | Enter alpha value. | (1 point) | 2 | |||||
| Sample Size | Enter the sample size. | (1 point) | -2 | What is the mean? | ||||
| Sample Mean | Enter the sample mean. | (1 point) | 0 | (1 point) | ||||
| Sample Standard Deviation | Enter the sample standard deviation. | (1 point) | -2 | |||||
| -3 | ||||||||
| Intermediate Calculations | -5 | What is the standard deviation? | ||||||
| Standard Error of the Mean | ERROR:#DIV/0! | Access this helpful video: | Video | -4 | (1 point) | |||
| Degrees of Freedom | -1 | 2 | ||||||
| t Test Statistic | ERROR:#DIV/0! | -2 | ||||||
| 22 | ||||||||
| Two-Tail Test | This section is not needed in this problem because it is a lower tail test with 1 tail. | -11 | ||||||
| Lower Critical Value | ERROR:#NUM! | 7 | ||||||
| Upper Critical Value | ERROR:#NUM! | 0 | ||||||
| p-Value | ERROR:#DIV/0! | -5 | ||||||
| ERROR:#DIV/0! | 3 | |||||||
| -8 | ||||||||
| Calculations Area | 8 | |||||||
| For one-tailed tests: | -2 | |||||||
| TDIST value | ERROR:#DIV/0! | -8 | ||||||
| 1-TDIST value | ERROR:#DIV/0! | State the results and interpret the results here: | -3 | |||||
| -4 | ||||||||
| Lower-Tail Test | ( 2 points) | 19 | ||||||
| Lower Critical Value | ERROR:#NUM! | -4 | ||||||
| p-Value | ERROR:#DIV/0! | -5 | ||||||
| ERROR:#DIV/0! | -1 | |||||||
| -4 | ||||||||
| Upper-Tail Test | This section is not needed in this problem because it is a lower tail test with 1 tail. | 73 | ||||||
| Upper Critical Value | ERROR:#NUM! | 0 | ||||||
| p-Value | ERROR:#DIV/0! | 1 | ||||||
| ERROR:#DIV/0! | 13 | |||||||
| -1 | ||||||||
| -8 | ||||||||
| 32 | ||||||||
| 18 | ||||||||
| 60 | ||||||||
| 142 | ||||||||
| -1 | ||||||||
| -11 | ||||||||
| -1 | ||||||||
| 47 | ||||||||
| 13 | ||||||||
| 12 | ||||||||
| 123 | ||||||||
| 1 | ||||||||
| 4 |
Prb8
| DIRECTIONS: | Brain Volume | (negatives mean it arrived early) | ||||||
| t Test for the Hypothesis of the Mean | Brain volume. Test the claim that the mean brain volume for the population is equal to 1100 cm2. Use a .01 significance level. | 963 | How many readings are in this sample? | |||||
| Data | 1027 | (1 point) | ||||||
| Null Hypothesis m= | Enter the hypothesis test amount. | (1 point) | 1272 | |||||
| Level of Significance | Enter alpha value. | (1 point) | 1079 | |||||
| Sample Size | Enter the sample size. | (1 point) | 1070 | What is the mean? | ||||
| Sample Mean | Enter the sample mean. | (1 point) | 1173 | (1 point) | ||||
| Sample Standard Deviation | Enter the sample standard deviation. | (1 point) | 1067 | |||||
| 1347 | ||||||||
| Intermediate Calculations | 1100 | What is the standard deviation? | ||||||
| Standard Error of the Mean | ERROR:#DIV/0! | Access this helpful video: | Video | 1204 | (1 point) | |||
| Degrees of Freedom | -1 | |||||||
| t Test Statistic | ERROR:#DIV/0! | |||||||
| State the results and interpret the results here: | ||||||||
| Two-Tail Test | ||||||||
| Lower Critical Value | ERROR:#NUM! | ( 2 points) | ||||||
| Upper Critical Value | ERROR:#NUM! | |||||||
| p-Value | ERROR:#DIV/0! | |||||||
| ERROR:#DIV/0! | ||||||||
| Calculations Area | ||||||||
| For one-tailed tests: | ||||||||
| TDIST value | ERROR:#DIV/0! | |||||||
| 1-TDIST value | ERROR:#DIV/0! | |||||||
| Lower-Tail Test | This section is not needed in this problem because it is a 2-tail test. | |||||||
| Lower Critical Value | ERROR:#NUM! | |||||||
| p-Value | ERROR:#DIV/0! | |||||||
| ERROR:#DIV/0! | ||||||||
| Upper-Tail Test | This section is not needed in this problem because it is a 2-tail test. | |||||||
| Upper Critical Value | ERROR:#NUM! | |||||||
| p-Value | ERROR:#DIV/0! | |||||||
| ERROR:#DIV/0! | ||||||||
Prb9
| DIRECTIONS: | Systolic blood pressure | (negatives mean it arrived early) | ||||||
| t Test for the Hypothesis of the Mean | Blood pressure. Test the claim that the mean female population systolic blood pressure level is less than 120 mm Hg. Use a .05 level of significance. | 122 | How many readings are in this sample? | |||||
| Data | 120 | (1 point) | ||||||
| Null Hypothesis m= | Enter the hypothesis test amount. | (1 point) | 90 | |||||
| Level of Significance | Enter alpha value. | (1 point) | 150 | |||||
| Sample Size | Enter the sample size. | (1 point) | 132 | What is the mean? | ||||
| Sample Mean | Enter the sample mean. | (1 point) | 88 | (1 point) | ||||
| Sample Standard Deviation | Enter the sample standard deviation. | (1 point) | 100 | |||||
| 114 | ||||||||
| Intermediate Calculations | 94 | What is the standard deviation? | ||||||
| Standard Error of the Mean | ERROR:#DIV/0! | Access this helpful video: | Video | 100 | (1 point) | |||
| Degrees of Freedom | -1 | 110 | ||||||
| t Test Statistic | ERROR:#DIV/0! | 188 | ||||||
| 106 | ||||||||
| Two-Tail Test | This section is not needed in this problem because it is a lower tail test with 1 tail. | 130 | ||||||
| Lower Critical Value | ERROR:#NUM! | 126 | ||||||
| Upper Critical Value | ERROR:#NUM! | 90 | ||||||
| p-Value | ERROR:#DIV/0! | 168 | ||||||
| ERROR:#DIV/0! | 110 | |||||||
| 98 | ||||||||
| Calculations Area | 112 | |||||||
| For one-tailed tests: | 116 | |||||||
| TDIST value | ERROR:#DIV/0! | 128 | ||||||
| 1-TDIST value | ERROR:#DIV/0! | State the results and interpret the results here: | 116 | |||||
| 112 | ||||||||
| Lower-Tail Test | ( 2 points) | 126 | ||||||
| Lower Critical Value | ERROR:#NUM! | 94 | ||||||
| p-Value | ERROR:#DIV/0! | 120 | ||||||
| ERROR:#DIV/0! | 94 | |||||||
| 120 | ||||||||
| Upper-Tail Test | This section is not needed in this problem because it is a lower tail test with 1 tail. | 148 | ||||||
| Upper Critical Value | ERROR:#NUM! | 126 | ||||||
| p-Value | ERROR:#DIV/0! | 126 | ||||||
| ERROR:#DIV/0! | 112 | |||||||
| 120 | ||||||||
| 110 | ||||||||
| 98 | ||||||||
| 130 | ||||||||
| 114 | ||||||||
| 174 | ||||||||
| 108 |
Prb10
| DIRECTIONS: | Voltage | (negatives mean it arrived early) | ||||||
| t Test for the Hypothesis of the Mean | Voltage. Test the claim that the mean voltage is 120 volts. Use .01 level of significance. | 123.8 | How many readings are in this sample? | |||||
| Data | 123.9 | (1 point) | ||||||
| Null Hypothesis m= | Enter the hypothesis test amount. | (1 point) | 123.9 | |||||
| Level of Significance | Enter alpha value. | (1 point) | 123.3 | |||||
| Sample Size | Enter the sample size. | (1 point) | 123.4 | What is the mean? | ||||
| Sample Mean | Enter the sample mean. | (1 point) | 123.3 | (1 point) | ||||
| Sample Standard Deviation | Enter the sample standard deviation. | (1 point) | 123.3 | |||||
| 123.6 | ||||||||
| Intermediate Calculations | 123.5 | What is the standard deviation? | ||||||
| Standard Error of the Mean | ERROR:#DIV/0! | Access this helpful video: | Video | 123.5 | (1 point) | |||
| Degrees of Freedom | -1 | 123.5 | ||||||
| t Test Statistic | ERROR:#DIV/0! | 123.7 | ||||||
| State the results and interpret the results here: | 123.6 | |||||||
| Two-Tail Test | 123.7 | |||||||
| Lower Critical Value | ERROR:#NUM! | ( 2 points) | 123.9 | |||||
| Upper Critical Value | ERROR:#NUM! | 124.0 | ||||||
| p-Value | ERROR:#DIV/0! | 124.2 | ||||||
| ERROR:#DIV/0! | 123.9 | |||||||
| 123.8 | ||||||||
| Calculations Area | 123.8 | |||||||
| For one-tailed tests: | 124.0 | |||||||
| TDIST value | ERROR:#DIV/0! | 123.9 | ||||||
| 1-TDIST value | ERROR:#DIV/0! | 123.6 | ||||||
| 123.5 | ||||||||
| Lower-Tail Test | This section is not needed in this problem because it is a 2-tail test. | 123.4 | ||||||
| Lower Critical Value | ERROR:#NUM! | 123.4 | ||||||
| p-Value | ERROR:#DIV/0! | 123.4 | ||||||
| ERROR:#DIV/0! | 123.4 | |||||||
| 123.3 | ||||||||
| Upper-Tail Test | This section is not needed in this problem because it is a 2-tail test. | 123.3 | ||||||
| Upper Critical Value | ERROR:#NUM! | 123.5 | ||||||
| p-Value | ERROR:#DIV/0! | 123.6 | ||||||
| ERROR:#DIV/0! | 123.8 | |||||||
| 123.9 | ||||||||
| 123.9 | ||||||||
| 123.8 | ||||||||
| 123.9 | ||||||||
| 123.7 | ||||||||
| 123.8 | ||||||||
| 123.8 |