In Country A, the population mean height for 3-year-old boys is 39 inches Suppose a random...

 

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In Country A, the population mean height for 3-year-old boys is 39 inches Suppose a random sample of 15 3-year-old boys from Country B showed a sample mean of 38.6 inches with a standard deviation of 2 inches The boys were independently sampled Assume that heights are Normally distributed in the population Complete parts a through c below Rejectus rejecting house ON CUTTI OA Reject Ho The population mean is definitely not 39 in on the basis of these data at a significance level of 0.05 OB. Do not reject H. There is no reason to believe that 39 in is not the population mean at a significance level of 0.05 OC Do not reject Ho The population mean is definitely 39 in on the basis of these data at a significance level of 0.05 OD. Reject H. There is reason to believe that 39 in is not the population mean at a significance level of 0.05 b. Now suppose the sample consists of 30 boys instead of 15 and repeat the test Find the test statistic (Type an integer or decimal rounded to two decimal places as needed) Find the p-value (Type an integer or decimal rounded to three decimal places as needed) In Country A, the population mean height for 3-year-old boys is 39 inches Suppose a random sample of 15 3-year-old boys from Country B showed a sample mean of 38.6 inches with a standard deviation of 2 inches The boys were independently sampled Assume that heights are Normally distributed in the population Complete parts a through c below Rejectus rejecting house ON CUTTI OA Reject Ho The population mean is definitely not 39 in on the basis of these data at a significance level of 0.05 OB. Do not reject H. There is no reason to believe that 39 in is not the population mean at a significance level of 0.05 OC Do not reject Ho The population mean is definitely 39 in on the basis of these data at a significance level of 0.05 OD. Reject H. There is reason to believe that 39 in is not the population mean at a significance level of 0.05 b. Now suppose the sample consists of 30 boys instead of 15 and repeat the test Find the test statistic (Type an integer or decimal rounded to two decimal places as needed) Find the p-value (Type an integer or decimal rounded to three decimal places as needed)