Be sure to show all your work for problems requiring calculations in order to earn partial credit for an incorrect

profiletutor4helpyou
 (Not rated)
 (Not rated)
Chat

Be sure to show all your work for problems requiring calculations in order to earn partial credit for an incorrect answer. If you choose to just submit answers rather than complete solutions, let me know which type of technology you used.

 

Please highlight your final answer. 

1. (1 point) Determine which of the four levels of measurement:

Voltage measurements from my house                     Book genre

Outside temperature in winter in Silver SpringRestaurant ratings on scale of 0-4 stars

2. (1 point) Determine type of sampling:

­I collected shoe sizes from my family1003 adults were called after their phone numbers were 

randomly generated by computerPolice stopped every sixth driver for sobriety test U.S. D.O.C. collected data by randomly selecting 8

Federal prisons and surveying every prisoner

3. (2 points) I collected radon samples from basements in

my neighborhood and obtained the following:

Radon in cPi

Frequency

2-5

2

6-9

2

10-13

6

14-17

15

 

Identify class width

 

Identify class midpoints

Identify class boundaries

 

Create histogram

 

 

4. (1 point) A simple random sample of pages of my dictionary was collected. These are the number of words defined on each page. Find the mean, median, mode, and midrange.

51     63     36     43     34     62     73     39     53     79

There are 1459 pages. Estimate the total number of words in the dictionary. Is the estimate likely to be an accurate estimate of the total number of words in the English language?

 

 

5. (1 point) Environmental scientists measured CO2 emissions of a sample of cars in tons. Is the value of 9.3 unusual? Base your answers on the standard deviation, which must be included in your answer.

7.2     7.1     7.4     7.9     6.5     7.2     8.2     9.3

 

 

 

 

 

 

 

 

 

6. (2 points) A simple random sample of starting weekly salaries for college graduates was obtained. What is the 5-number summary? Construct a boxplot.

 

664    693    698    714    751    753    779    789    802    818    834    836

 

Descriptive Statistics: Values 

 

Variable  Minimum     Q1  Median     Q3  Maximum

Values      664.0  702.0   766.0  814.0    836.0

 

 

 

 

 

7. (1 point) What is the probability of selecting a person who has high blood pressure or being male? 

 

Has High Blood Pressure   

 

Yes

No

Male

201

288

Female

126

224

 

 

 

What is the probability of selecting a woman?

 

 

 

 

8. (1 point) If 2 out of 100 second graders are randomly selected, find the probability that they are both boys and like spring:

 

 

 

Spring

Summer

Fall

Winter

Boys

39

35

8

4

Girls

6

5

2

1

 

 

a) With replacement?

 

 

b) Without replacement?

 

 

 

 

 

 

 

9. (1 point) Human body temperatures have a mean of 98.200 F and a standard deviation of 0.620 F. Convert each of the following to a z-score and determine if it is usual or unusual.

 

a. 96.900 F

 

b. 96.980 F

 

 

 

10.  (1 point) My parents lived in Florida and wanted to know the probability of winning the Florida Fantasy 5 if they bought one ticket. They had to pick the five winning numbers from 1–36. Each randomly selected number is different and order doesn’t matter.

 

11.  (2 points) Groups of five babies are randomly selected. In each group, the random variable x is the number of babies with green eyes.

 

x

P(x)

0

0.528

1

0.360

2

0.098

3

0.013

4

0.001

5

0+

 

Is this a probability table? If not, why not?  If it is, what is the mean and standard deviation?

 

 

 

 

 

 

 

 

12. (1 points) Ten peas are generated from parents having the green/yellow pair of genes so there is a 75% probability that an individual pea will have a green pod. Find the probability that among the 10 offspring peas, at least 9 have green pods. Is this unusual? Why or why not?

 

13.  (1 point) Find the critical value:

 

a. Z0.02=  Z0.01=  

b. Z0.10=  

 

14. (2 points) Assume adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15.

 

Find the probability that a randomly selected adult has IQ < 115

 

 

Find the probability that a randomly selected adult has IQ > 70

 

 

Find P30, which is the IQ separating the bottom 30% from the top 70%

 

 

 

 

 

 

 

15. (2 points) Assume women’s ring sizes are normally distributed with a mean of 6 and a standard deviation of 1.0. 

 

a. If one woman is randomly selected, find the probability that her ring size is < 6.2

 

b. If 100 women are randomly selected, find the probability that the mean ring size is < 6.2

 

 

c. A jeweler sees part b. and decides that all rings should be made < 6.2 because they would fit all but a few women with a ring guard. What’s wrong with this reasoning

 

2.4.16

Here are weekly instructions times for school children in different countries: 23.8 hours(Japan) 26.9 hours (China) 22.2 hours (U.S) 24.6 hours (UK) 24.8 hours (France). What do these results suggest about education in USA?

  • 9 years ago
Be sure to show all your work for problems requiring calculations in order to earn partial credit for an incorrect
NOT RATED

Purchase the answer to view it

blurred-text
  • attachment
    data.xlsx
  • attachment
    solution.docx