You must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures: 91.6 79.7 84.2 77.3 81 66.7 80.4 86 86 Find the 90% confidence interval. Enter your answer as an open-interval (i.e., parentheses) accurate to two decimal places (because the sample data are reported accurate to one decimal place). 90% C.I. -

Construct the confidence interval for the population mean u .c​=.98, x=6.4, o=0.7, n = 40

Use the given confidence interval to find the margin of error and the sample proportion.   ​(0.740​,0.766​)         E=enter your response here ​(Type an integer or a​ decimal.)

You are given the sample mean and the population standard deviation. Use this information to construct the​ 90% and​ 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 38 business​ days, the mean closing price of a certain stock was ​$119.97. Assume the population standard deviation is ​$10.88.