Although the retinal image changes, we easily recognize the…
Questions
Althоugh the retinаl imаge chаnges, we easily recоgnize the rectangular shape оf a door whether it is closed, partially open, or completely open. This is an example of:
1/2 c = 0.1875 pt
Finаl Exаm Pаrt II A high schооl club claims that high schоol students work an average of 15 hours per week in the summer. A statistics professor believes that the claim is too low and decides to conduct a study to test the high school club’s claim. (6 points) Please write Ho and Ha Ho: ________________ Ha: ________________ Please include who is taking each position Please indicate if the test is a left tailed, right tailed or two tailed test In the past, the mean running time for a solar light has been 6.5 hours. The manufacturer has updated his factory system. He wants to perform a hypothesis test to determine whether the mean running time has changed as a result: (6 points) Please write Ho and Ha Ho: ________________ Ha: ________________ Please include who is taking each position Please indicate if the test is a left tailed, right tailed or two tailed test Please write under each sentence the correct fill in the blank: We FAIL TO REJECT / REJECT the Null when it is TRUE = TYPE I ERROR (6 points) We FAIL TO REJECT/REJECT the null when it is FALSE = TYPE II ERROR (6 points) Please write under each the correct words (6 points) If the p-value is _____________ a, we ___________ the null hypothesis LESS THAN REJECT GREATER THAN FAIL TO REJECT LESS THAN and EQUAL TO MORE THAN and EQUAL TO The researcher at your local doctor’s office states that on weekends the average wait time for a call back is 15 minutes. Based on discussions you have had with friends who have complained about how long they waited for a callback, you dispute the researcher’s claim. You decide to test your hypothesis. Over the course of a few weekends, you record the wait time for 50 randomly selected patients. The average wait time for these 50 patients is 17 minutes with a standard deviation of 5 minutes. Do you have enough evidence to support your hypothesis that the average call back wait time exceeds 15 minutes? Test at a = 5%. Please DRAW a diagram and label it fully to receive full credit (2 points) Formulate the Hypotheses and who is stating what? (4 points) Ho =________________________ Ha = ________________________ a = __________________ Is this right tailed, left tailed or two tailed? _____________________ Model the sampling distribution of the mean: (3 points) n = _____________ = _____________ s = _____________ test statistic = _____________ (4 points) (please label on curve) P value = _____________ (4 points) (please label on curve) Decision Rule: (3 points) Reject if p ____ a, REJECT Ho Here, we ________________ please fill in Reject or Fail to Reject Ho? Who is ultimately correct? ___________________