# Math 1342 Test 3 Assignment

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Math 1342 Test 3

Question 1 25 points

A random sample of data was obtained

47 95 54 79 64 40 80 57 90 80

80 67 13 49 40 44 79 80 48 16

68 70 15 21 52 60 78 102 40 50

29 35 28

a. Use StatCrunch to generate Summary Statistics

b. Use StatCrunch to create a Box Plot

c. Based on your summary statistics, IQR and Box Plot does the Data Contain Outliers?

d. Use StatCrunch to generate a 95% confidence interval for the mean

e. Use StatCrunch and Hypothesis Testing (P-Value Method) for the claim that the mean is different

from 50 at a 95% confidence level.

Question 2 25 points

A random sample of data was obtained

23 45 15 26 21 32 44 22 15 45

61 12 6 40 27 38 65 5 13 40

a. Use StatCrunch to generate Summary Statistics

b. Use StatCrunch to generate a Stem and Leaf Plot

c. Use StatCrunch to generate a 90% confidence interval for the mean

d. Use StatCrunch to generate a 95% confidence interval for the variance

e. Use StatCrunch and Hypothesis Testing (P-Value Method) for the claim that the mean is less than 35

at a 90% confidence level.Question 3 25 points

A random sample of data was obtained

10.1 9.8 9.0 9.6 9.9 10.0 8.7 9.6 10.0 9.4

9.8 9.4 9.8 9.1

a. Use StatCrunch to generate Summary Statistics

b. Based on your summary statistics, IQR does the Data Contain Outliers?

c. Use StatCrunch to generate a 92% confidence interval for the mean

d. Use StatCrunch to generate a 98% confidence interval for the mean

e. Use StatCrunch and Hypothesis Testing (P-Value Method) for the claim that the mean is less than 10

at a 90% confidence level.

Question 4 25 points

A survey was done concerning – Do you favor like strawberry ice-cream? 1 = Yes, 0 = No and the results

were as follows

1 1 1 0 0 0 0 1 1 0

0 0 1 1 1 1 1 1 0 1

1 0 1 1 0 1 1 0 0 0

0 1 1 0 1 0 1 1 0 1

a. Use StatCrunch to the 90% confidence interval for the proportion of people that FAVOR strawberry

ice-cream.

b. Use StatCrunch to the 90% confidence interval for the proportion of people that DO NOT FAVOR

strawberry ice-cream.

c. Use StatCrunch and Hypothesis Testing (P-Value Method) for the claim that the proportion of people

that favor strawberry ice-cream is greater than 45% at 90% confidence level.

d. Use StatCrunch and Hypothesis Testing (P-Value Method) for the claim that the proportion of people

that favor that favor strawberry ice-cream is different from 40% at 90% confidence level.

- 10 years ago

**Math 1342 Test 3 Assignment Solution**

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