According to a study conducted by Dell Computers, 65% of men and 70% of women say that weight is a very important factor in purchasing a laptop…

1. According to a study conducted by Dell Computers, 65% of men and 70% of women say that weight is a very important factor in purchasing a laptop computer. Suppose this survey was conducted using 374 men and 481 women. Test the claim that there is no difference in the proportion of men and women who think weight is a factor in purchasing a laptop? Use a 5% level of significance.

2. The ABC Corporation wants to test for a difference in two methods of training new employees. A sample of 15 new employees is given a three-day seminar (Method A) and a second sample of 12 new employees is given a two-day videocassette course (Method B). Each group is tested at the end of training and the results are: for Method A, the mean is 47.73 and the standard deviation is 4.42, foe Method B, the mean is 56.5 and the standard deviation is 4.27. At a 5% level of significance, can the company assume that there is No difference in the 2 methods of training? What is your conclusion?

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