Paying for First Date- USA Today posted this question on the electronic version of its newspaper. "Should guys pay for the first date"?Of the 1148 subjects who decided to respond , 85 % of them said " yes:.

A- What is wrong with this survey?

B- Does the survey constitute an experiment t or an observational study?

2- Sleep Mean - As a part of the National Health and Nutrition Examination Survey, subjects were asked how long they slept the preceding night, and the following times (hours) were reported: 8,7,5,7,4,7,8,8,8,6. Find the mean.

3- Slep Mode- what is the mode of the sample values listed in Exercise 2?

4- Sleep 5- Number Summary- For a sample of 100 sleep times, give the names of the values that constitute the 5- number summary.( the actual values can't be identified, just give the names of those values.)