Introduction to Hypothesis Testing

Question 1

Which of the following are the correct hypotheses for this test?

Revolt · Accepted Answer

H0: = 0 versus Ha: > 0 where pD = the proportion of all dogs that can be trained to fetch a ball and pC = the proportion of all cats that can be trained to fetch a ball.

Question 2

✔ less thangreater thanequal to

Revolt · Accepted Answer

less than

Question 3

✔ rejectfail to reject

Revolt · Accepted Answer

reject

Question 4

✔ havedo not have

Revolt · Accepted Answer

have

Question 5

less than✔ greater thanequal to

Revolt · Accepted Answer

greater than

Question 6

Select all statements that are correct.

Revolt · Accepted Answer

We want to carry out a 2-proportion z-test.; nD = 50; Answer image: https://r03.core.learn.edgenuity.com//media.edgenuity.com/EVresources/cfec885e1104e5cd537ef83cd23bf5ce.png

Question 7

Select all statements that are correct.

Revolt · Accepted Answer

We have two independent random samples.; The 10% condition is met.; The expected number of successes and failures for both samples are 24, 26, 29, 31.

Question 8

Calculate the test statistic and P-value for this test, and then complete this concluding statement. If needed, use the z-table to answer the question. Because the P-value of is we H0. We convincing evidence to conclude that the proportion of all dogs that can be trained to fetch a ball is the proportion of all cats that can be trained to fetch a ball.

Revolt · Accepted Answer

approximately 0; Selection 1: approximately 0; Selection 2: less than; Selection 3: reject; Selection 4: have; Selection 5: greater than

Question 9

An analyst in the department of research and development is trying to better understand what factors cause a printer to jam when completing 2-sided printing. He has 80 printers that he randomly allocates evenly to 2 treatments: regular paper and cardstock paper. He sends a 20-page 2-sided document to each printer and finds that 5 of the 40 printers using regular paper jam and 15 of the 40 printers using cardstock paper jam. Do these data provide convincing evidence that the proportion of printers that would jam while printing 2-sided on regular paper is less than the proportion that would jam while printing 2-sided on cardstock? Use . Complete the statement of the hypotheses and define the population parameters for this test. H0: versus Ha: where pR = the of all printers that jam while printing 2-sided on regular paper and pC = the of all printers that jam while printing 2-sided on cardstock paper.

Revolt · Accepted Answer

equals zero; Selection 1: equals zero; Selection 2: is less than zero; Selection 3: proportion; Selection 4: proportion

Question 10

Select all statements that are correct.

Revolt · Accepted Answer

We have two groups in a randomized comparative experiment.; The 10% condition does not apply.; The expected number of successes and failures for both samples are 10, 30, 10, 30.

Introduction to Hypothesis Testing Answers

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