The difference exists between the mean number

Reference no: EM1321062

Question: Members of the general adult population volunteer an average of 4.2 hours per week. A random sample of twenty female college students & eighteen male college students produced the results given in the table below. Assuming that the variances of the time volunteered by females & males are equal, at the .01 level of significance, is there sufficient evidence to conclude that a difference exists between the mean number of volunteer hours per week for male & female college students?

	Females	Males
Sample size	20	18
Sample mean	3.8	2.5
Sample variance	3.5	2.2

[A] No, because the test value 2.58 is greater than the critical value

[B] Yes, because the test value 2.58 is greater than the critical value

[C] No, because the test value 2.36 is greater than the critical value

[D] No, because the test value 2.36 does not exceed the critical value

Reference no: EM1321062

Questions Cloud

Find the percentage of customers spent less than $20 : Find the percentage of customers spent less than $20

Find probability that fewer than 500will refuse to cooperate : A market research organization has found that 40 percent of all supermarket shoppers refuse to cooperate when questioned by its pollsters. If 1,000 shoppers are approached, Find the probability that fewer than 500 will refuse to cooperate?

Calculate the value the test statistic : Calculate the value the test statistic

Compute the test value : Compute the test value

The difference exists between the mean number : The difference exists between the mean number

Calculate the value of the sample test statistic : Calculate the value of the sample test statistic

Find the p value associated with the test of hypothesis : Find the p-value associated with the test of hypothesis

The mean bone marrow micro vessel density : At the .01 level of significance, is there sufficient evidence to conclude that the mean bone marrow micro vessel density is higher before the stem cell transplant than after the stem cell transplant?

Calculate the value of the sample correlation coefficient : Calculate the value of the sample correlation coefficient between weekly sales & shelf space.

User Account

All Pages