Question

A study was designed to compare the attitudes of two groups of nursing students towards computers. Group 1 had previously taken a statistical methods course that involved significant computer interaction. Group 2 had taken a statistic methods course that did not use computers. The students' attitudes were measured by administering the Computer Anxiety Rating Scale (CARS). A random sample of 1313 nursing students from Group 1 resulted in a mean score of 60.860.8 with a standard deviation of 4.64.6. A random sample of 99 nursing students from Group 2 resulted in a mean score of 73.973.9 with a standard deviation of 6.36.3. Can you conclude that the mean score for Group 1 is significantly lower than the mean score for Group 2? Let μ1μ1 represent the mean score for Group 1 and μ2μ2 represent the mean score for Group 2. Use a significance level of α=0.01α=0.01 for the test. Assume that the population variances are equal and that the two populations are normally distributed.

Step 1: State the null and alternative hypotheses for the test.

Step 2 of 4: Compute the value of the t test statistic. Round your answer to three decimal places

Step 3 of 4: Determine the decision rule for rejecting the null hypothesis H0. Round your answer to three decimal places.

Reject Ho if (t, I t I) (<,>) ____

Step 4 of 4: State the test's conclusion.

A. Reject Null Hypothesis

B. Fail to Reject Null Hypothesis

Answer 1

step 1:

Ho:μ1-μ2	=	0
Ha: μ1-μ2	<	0

step 2:

test stat t =(x1-x2-Δo)/Se=

-5.652

Step 3 of 4:

Reject Ho if t < -2.528

step 4:

A. Reject Null Hypothesis