Home / Answered Questions / WPC 300 / wpc-300-lab-5-inferential-quiz-instructions-q-477

(Solved): WPC 300 : Lab 5: Inferential Quiz Instructions...

Lab 5: Inferential

Quiz Instructions

• Change the file names to: YourFirstName_YourLastName_XXXX.jmp
• Review what we did in the lab.
• You must use JMP to answer the following multiple-choice questions.
• Note: When you are asked to submit a screen capture, you need to make sure that your name is part of the capture.

Question 1       2 pts

Refer data: pricequote.jmp

Using descriptive statistics, what can you conclude?

Group of answer choices

• Mary’s pricing is more reasonable than that of Barry.
• Barry’s average price is lower than Mary’s average price
• Variation in Mary’s price is higher than Barry’s price
•  Barry’s average price is higher than Mary’s average price

Question 2     2 pts

Use a box plot to compare overall all difference in price quoted by Barry and Mary.  What is your conclusion?

Group of answer choices

• Barry’s price has larger spread in the population
• Mary’s price has a larger spread in the sample
• Mary’s price has larger spread in the population
• Barry’s price has a larger spread in the sample

Question 3     2 pts

Interquartile range in Mary’s price quote is from:

Group of answer choices

• \$133 to \$114
• \$114 to \$105
• \$125 to \$105
• \$133 to \$97

Question 4             2 pts

Based on a two-tailed statistical test to infer about the population, what is your conclusion?

Group of answer choices

• Overall, Mary’s prices are significantly higher than Barry’s prices
• Nothing can be inferred as the sample size is really small
• Overall, Barry’s prices are similar to Mary’s prices
• Overall, Barry’s prices are not the same as Mary’s prices.

Question 5      2 pts

To develop a two-tailed statistical test to find the answer to Q4, what is the null hypothesis?

Group of answer choices

• Overall, Barry’s prices are at least \$9 higher than Mary’s prices
• Overall, Barry’s prices are the same as Mary’s prices.
• Overall, Barry’s prices are less than Mary’s prices
• Overall, Barry’s prices are more than Mary’s prices

Question 6        2 pts

The conclusion inferred in Q4 is supported by t-test where the obtained p-value is.

Group of answer choices

• More than 0.0284
• Less than 0.986
• Less than 0.05
• Equal to 2.52

Question 7            2 pts

Refer data:SalaryANOVA.jmp.

What is the null hypothesis of the ANOVA analysis of Salary data across majors,

Group of answer choices

• Average salaries of all college majors are very different
• Average salaries of all college majors are the same
• None of the selection is correct
• Average salaries of all college majors are slightly different

Question 8           2 pts

Based on the results obtained from the ANOVA analysis of Salary data across majors,

Group of answer choices

• You reject the null hypothesis
• You reject the alternative hypothesis
• You could not reject the null hypothesis
• You accept the null hypothesis

Question 9        2 pts

Based on the connecting letter report, salaries of which college majors are significantly different?

Group of answer choices

• Language and music
• Social science and music
• Social science and special education
• Science and music

Question 10          2 pts

Support your answer for Q9 by providing an appropriate screenshot.

We have an Answer from Expert