Questions from Business Statistics

Q: Every year on Groundhog Day (February 2), the famous groundhog

Every year on Groundhog Day (February 2), the famous groundhog “Punxsutawney Phil” tries to predict whether there will be 6 more weeks of winter. The article “groundhog has been off target” (USA TODAY...

Q: USA TODAY, (February 17, 2011) described a survey

USA TODAY, (February 17, 2011) described a survey of 1008 American adults. One question on the survey asked people if they had ever sent a love letter using e-mail. Suppose that this survey used a ran...

Q: Use the definition of the P-value to explain the following

Use the definition of the P-value to explain the following: a. Why H0 would be rejected if P-value = 0.003 b. Why H0 would not be rejected if P-value = 0.350

Q: According to a survey of a random sample of 2278 adult Americans

According to a survey of a random sample of 2278 adult Americans conducted by the Harris Poll (“Do Americans prefer name brands or Store brands? well, that Depends” (theharrispoll.com, February 11, 20...

Q: Step 2 of the five-step process for hypothesis testing is

Step 2 of the five-step process for hypothesis testing is selecting an appropriate method. What is involved in completing this step?

Q: For which of the following P-values will the null hypothesis

For which of the following P-values will the null hypothesis be rejected when performing a test with a significance level of 0.05? a. 0.001 b. 0.021 c. 0.078 d. 0.047 e. 0.148

Q: The article “euthanasia Still acceptable to Solid majority in U.

The article “euthanasia Still acceptable to Solid majority in U.S.” (www.gallup.com, June 24, 2016, retrieved November 29, 2016) summarized data from a survey of 1025 adult Americans. When asked if do...

Q: Step 5 of the five-step process for hypothesis testing is

Step 5 of the five-step process for hypothesis testing is communication of results. What is involved in completing this step?

Q: For which of the following combinations of P-value and significance

For which of the following combinations of P-value and significance level would the null hypothesis be rejected? a. P-value = 0.426  = 0.05 b. P-value = 0.033  = 0.01 c. P-value = 0.046  = 0.10...

Q: Explain why a P-value of 0.002 would be

Explain why a P-value of 0.002 would be interpreted as strong evidence against the null hypothesis.