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 10 nursing students from Group 1 resulted in a mean score of 45.3 with a standard deviation of 4.5. A random sample of 17 nursing students from Group 2 resulted in a mean score of 55.8 with a standard deviation of 6.9. Can you conclude that the mean score for Group 1 is significantly lower than the mean score for Group 2? Let μ1 represent the mean score for Group 1 and μ2 represent the mean score for Group 2. Use a significance level of α=0.1 for the test. Assume that the population variances are equal and that the two populations are normally distributed. Step 2 of 4 : Compute the value of the t test statistic. Round your answer to three decimal places

Answer 1

from above:

Step 2 of 4 : Compute the value of the t test statistic =-4.288

(Note :Decision rule :                   reject Ho if test statistic t<-1.316)

reject Ho