XARA Construct a 99% confidence interval to estimate the population mean using the following data.what assumptions need to be made to construct the interval? 7810=16 n = 20 What assumptions need to be made to construct the interval

Find the lower endpoint and upper endpoint also

If n = 100 and p̂ (p-hat) = 0.4, construct a 95% confidence interval.Give your answers to three decimals

Construct a 90​% confidence interval of the population proportion using the given information.   x=240, n=300

Please help with these

If n = 120 and X = 96, construct a 90% confidence interval for the population proportion, p. Give your answers to three decimals < p <

You measure 37 textbooks' weights, and find they have a mean weight of 71 ounces. Assume the population standard deviation is 14.1 ounces. Based on this, construct a 95% confidence interval for the true population mean textbook weight.

A 95% confidence interval is constructed in order to estimate the proportion of adults who own an iPhone. The resulting interval has a margin of error of 0.043. Which of the following would be the margin of error for a 90% confidence interval based on the same sample of data?

construct a confidence interval for this data. You should construct a 95% confidence interval for this data. How you do this will depend on  whether your data is summarized using a mean or proportions. If you have categorical data, you will have to pick one of the categories and focus on a confidence interval for the proportion for that category, and you only need to do one for that one category. Please show the parts of your equation (point estimate, Z or T, and standard error) in addition to your final result.

What value of z would you use to calculate the 98% confidence interval for a population mean, given that you know the population standard deviation, the sample size and the sample mean of your sample?