Suppose the mean neight 9th grade one high s estimated. The population standard deviation is 3 inches. The heights of 9 randomly selected students are 64. 62, 72, 61, 61, 62, 72, 71 and 69. E = Ex: 12.34 Margin of error at 95% confidence level = Ex: 1.23 95% confidence interval = [ Ex: 12.34 Ex: 12.34 ] femaller value Jarcer valuel

You measure 40 turtles' weights, and find they have a mean weight of 63 ounces. Assume the population standard deviation is 7.5 ounces. Based on this, construct a 90% confidence interval for the true population mean turtle weight. Give your answers as decimals, to two places ounces

When 77 campers are randomly selected and surveyed, it was found that the average number that prefer to camp at the beach was 16. Assume the population standard deviation is 2.3. Construct a 90% confidence interval for the true population mean of the number of campers who prefer to camp at the beach. Give your answers to 3 decimal places. Error =

Assum a sample is used to estimate a populatation mean.  Find the 95% confidence interval for a sample size of 41 with a mean of 64.2 and a standard deviation of 13.4.  Enter answer as an open interval (i.e. parentheses) accurate to 3 decimal places.