Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 5 inches. The heights of 9 randomly selected students are 66, 73, 64, 71, 69, 70, 74, 71 and 73. Ex: 12.340 Margin of error at 90% confidence level = Ex: 1.23€ 90% confidence interval= [Ex: 12.34 Ex: 12.34] [smaller value, larger value]

The winner for Best Male Actor is 35 years old and winn3er for Best Female Actress is 47.  The mean for all male actors is 45.1 with a standard deviation of 5.9 years.  Mean age for all actresses is 31.1  and the standard deviation is 12.1 years.  Relevent to gender, which winner has the most extreme age?

Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 3 inches. The heights of 6 randomly selected students are 71, 73, 69, 72, 71 and 64.  x= Margin of error at 99%= confidence level = 99% confidence interval =  [smaller value, larger value]=

Assume that the square footage of a residential house in the US is normally distributed with a mean=1000 and standard deviation=150 square feet. Suppose we select 450 houses from a town and we find that the mean of those houses is 1230 square feet (the standard deviation remains the same). What is the 95% confidence interval for this sample?     from 1216 to 1244     from 1250 to 1320     from 1126 to 1294     from 1038 to 1420

do number (d), (e), and (f) please

A sample of 100 postal employees found that the mean time these employees had worked for the postal service was eight years. Assume we know the standard deviation of the population of times postal service employees have spent with the postal service is five years. Find the 98% confidence interval for the mean time the population of postal service employees have spent with the postal service.

A data set includes 106 body temperatures of healthy adult humans having a mean of 98.7°F and a standard deviation of 0.66°F. Construct a 99​% confidence interval estimate of the mean body temperature of all healthy humans. What does the sample suggest about the use of 98.6°F as the mean body​ temperature?

plz

A data set includes 106 body temperatures of healthy adult humans having a mean of 98.9 degrees F and a standard deviation of 0.62 degrees F. Construct a 99 % confidence interval estimate of the mean body temperature of all healthy humans. What does the sample suggest about the use of 98.6 degrees F as the mean body temperature? What is the confidence interval estimate of the population mean? Round to three decimal places as needed.