Question: Question 15

In a national poll of 811 personal computer owners, it was found that 44% of the PC owners ranked sharing their credit card information as the number one concern in online shopping.

The survey also indicates that 72% of PC owners would purchase a more secure computer if available.

When given an actual dollar amount the added security would cost, 57% indicated that they would pay an extra $75 for a new PC delivering a more secure online experience.

a. Test the null hypothesis that 50 % of all PC owners in the U.S rank sharing their credit information as the number concern in online shopping versus the alternative that the percentage is not equal to 50%. Conduct the test at 0.05 level of significance.

b. At the 0.05 level of significance, is there evidence that more than 55% of all PC owners in the U.S. would pay an extra $75 for a new PC delivering a more secure online experience?