ooo AT&T; LTE 1:03 PM 85% Homework Do Homework-Lisa Kosciel x https://www.mathxl

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ooo AT&T; LTE 1:03 PM 85% Homework Do Homework-Lisa Kosciel x https://www.mathxl.com /Student/Player Homework MTH 126-301, Spring 2017 4/30/17 1:03 PM Save Homework: Section 9.4 Homework Score: 1.75 of 7 pts 3 616 HW Score: 61.439%, 21.5 of 35 pts 9.4.43 In Country A the population mean height for year-old boys is37 inches. Suppose a random sample of 15 year-old boys from Country B showed a sample mean of 36.1 inches with a of 4 inches. The boys were independently sampled. Assume that heights are Normally distributed in the population. Complete partsa through below. Determine whetherthe population mean for Country Bboys is significantly diferent from the Country Amean Use a significancelevel of 0.05. Which of the following correctly states and Ha? Ho: 37 Ho 37 Hot P237 H.: 37 H.: 37 Ho: 37 Ho: 37 How 37 H.: 37 Ha: 37 Find the test statistic. 087 Find the p-value. IType an integer or decimal ounded to three decimal places as needed. Reject or do not reject Ho-Choose the correct answer below. XA. Reject Ho The population mean is definitely not 37 in. onthe basis of these data ata significance level of 005. O B. Reject Ho-There is reason to believe that 37 in is not the population mean at a significance level of 0.05. *c. Do not reject Ho-There is no reason to believe that 37 n. is not the population mean ata significance level of0.05. O D. Do not reject Ho The population mean is definitely 37 in on the basis of these data ata significance level of005. b. Nowy suppose the sample consists of 30 boys instead of 15 and repeatthe test. Find the test statistic. 123 IType an integer or decimal rounded to two decimal places as needed.) Find the p-value. IType an integer or decimalrounded to three decimal places as needed. Reject or do not reject Ho. Choose the correct answer below. O A. Reject Ho The population mean is definitely not 37 in, on the basis of these data ata significance level of 0.05. MB. Do not reject Ho. There is no reason to believe that 37 n is not the population mean at a significance level of 0.05. C. Reject Ho. There is reason to believe that 37 in is not the population mean at a significance level of 0.05. O D. Do not reject Ho The population mean is definitely 37 in on the basis of these data ata significance level of0.05. Question is complete. Tap on the red indicators to see inconrect answers. All parts showing

Explanation / Answer

Question1.

Using minitab:

One-Sample T

Test of = 37 vs 37

N Mean StDev SE Mean 95% CI T-value P-value
15 36.00 4.00 1.03 (33.78, 38.22) -0.97 0.349

P-value >0.349 we do not reject null hypothesis.

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