Determine the minimum sample size required when you want to be 99% confident that the sample mean is within one unit of the population mean and o = 17.2. Assume the population is normally distributed. A 99% confidence level requires a sample size of. (Round up to the nearest whole number as needed.)

Determine the minimum sample size required when you want to be 90% confident that the sample mean is within one unit of the population mean and o= 12.1. Assume the population is normally distributed. A 90% confidence level requires a sample size of (Round up to the nearest whole number as needed.)

Determine the minimum sample size required when you want to be 95% confident that the sample mean is within one unit of the population mean and o=11.6. Assume the population is normally distributed. A 95% confidence level requires a sample size of (Round up to the nearest whole number as needed.) O

A doctor wants to estimate the mean HDL cholesterol of all​ 20- to​ 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 3 points with 99% confidence assuming s=17.8 based on earlier​ studies? Suppose the doctor would be content with 99% confidence. How does the decrease in confidence affect the sample size​ required? a. A​ 99% confidence level requires _______ subject. b. 90% confidence level requires ________ subject. c.How does the decrease in confidence affect the sample size​ required? a.Decreasing the confidence level decreases the sample size needed.   b.Decreasing the confidence level increases the sample size needed.   c.The sample size is the same for all levels of confidence.

Determine the minimum sample size required when you want to be 95% confident that the sample mean is within one unit of the population mean and o= 16.2. Assume the population is normally distributed. A 95% confidence level requires a sample size of (Round up to the nearest whole number as needed.)

Determine the minimum sample size required when you want to be 90% confident that the sample mean is within one unit of the population mean and o = 11.3. Assume the population is normally distributed. A 90% confidence level requires a sample size of. (Round up to the nearest whole number as needed.)

Determine the minimum sample size required when you want to be 99​% confident that the sample mean is within one unit of the population mean and σ=19.2. Assume the population is normally distributed.A 99% confidence level requires a sample size ofenter your response here. ​(Round up to the nearest whole number as​ needed.)

Determine the minimum sample size required when you want to be 90% confident that the sample mean is within one unit of the population mean and o= 12.2. Assume the population is normally distributed. A 90% confidence level requires a sample size of (Round up to the nearest whole number as needed.)

Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96

Determine the minimum sample size required when you want to be 99​% confident that the sample mean is within one unit of the population mean and σ=10.3. Assume the population is normally distributed.       A 99% confidence level requires a sample size of nothing. ​(Round up to the nearest whole number as​ needed.)