If n=160 and ˆp (p-hat) =0.48, find the margin of error at a 99% confidence level

A researcher collected sample data for 16 women ages 18 to 24. The sample had a mean serum cholesterol level (measured in mg/100 mL) of 192.4, with a standard deviation of 9.6  Assuming that serum cholesterol levels for women ages 18 to 24 are normally distributed, find a 90% confidence interval for the mean serum cholesterol level of all women in this age group. Then find the lower limit and upper limit of the 90% confidence interval. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. Lower level: Upper Level:

A simple random sample from a population with a normal distribution of 104 body temperatures has x=98.80°F and s=0.67°F. Construct an 80​% confidence interval estimate of the standard deviation of body temperature of all healthy humans.

If n = 440 and ˆpp^ = 0.52, construct a 90% confidence interval.Give your answers to three decimals < p <

A recording company wants to estimate the mean length of musical cd’s being recorded. A random sample of 28 cd’s has a mean length of 48.47 minutes and standard deviation of 13.9 minutes. Use this sample data to construct the 95% confidence interval for the population mean length of cd’s. Show lower and upper values for interval using two-decimal accuracy.

A simple random sample from a population with a normal distribution of 97 body temperatures has x=98.20°F and s=0.63°F. Construct a 99​% confidence interval estimate of the standard deviation of body temperature of all healthy humans.

The length of trout caught from a certain lake has a standard deviation of 1.8 inches. How many fish would you have to catch to calculate a 95% confidence interval estimate of the average length of the fish with a margin of error of 0.76 inches?

A simple random sample from a population with a normal distribution of 106 body temperatures has x=98.50°F and s=0.64°F. Construct a 98​% confidence interval estimate of the standard deviation of body temperature of all healthy humans.

A city planner wants to estimate the average monthly residential water usage in the city. He selected a random sample of 42 households from the city, which gave the mean water usage to be 3409.30 gallons over a one-month period. Based on earlier data, the population standard deviation of the monthly residential water usage in this city is 387.90 gallons. Make a 97% confidence interval for the average monthly residential water usage for all households in this city.

A simple random sample from a population with a normal distribution of 98 body temperatures has x=98.40°F and s=0.68°F. Construct a 90​% confidence interval estimate of the standard deviation of body temperature of all healthy humans.