1.Listed below are the amounts of net worth(in millions ofdollars) of the ten wealthiest celebrities in a country. Construct a 99% confidence interval. What does the result tell us about the population of allcelebrities? Do the data appear to be from a normally distributed population asrequired?

251

193

191

170

162

155

155

155

151

150

What is the confidence interval estimate of the population mean ?

$.....million<<$....million

(Round to one decimal place asneeded.)

2.Listed below are student evaluation ratings ofcourses, where a rating of 5 is for"excellent." The ratings were obtained at one university in a state. Construct a confidence interval using a 98% confidence level. What does the confidence interval tell about the population of all college students in thestate?

3.9, 3.2, 4.0, 4.8, 2.8, 4.1, 3.4, 4.5, 4.4, 4.2, 4.1, 3.8, 3.5, 4.0, 3.5

What is the confidence interval for the population mean ?

......<<.......(Round to two decimal places asneeded.)