Use the given confidence interval to find the margin of error and the sample mean. (12.7,20.5) The sample mean is (Type an integer or a decimal.)

Use the given confidence interval to find the margin of error and the sample mean.   ​(68.3​,80.9​)   THe sample mean is?    The margin of error is?

Use the given confidence interval to find the margin of error and the sample mean. (13.0,20.4) The sample mean is. (Type an integer or a decimal.)

When women were finally allowed to become pilots of fighter jets, engineers needed to redesign the ejection seats because they had been originally designed for men only. The ejection seats were designed for men weighing between 150 lb and 221 lb. Weights of women are now normally distributed with a mean of 175 lb and a standard deviation of 39 lb. Complete parts (a) through (c) below. ... a. If 1 woman is randomly selected, find the probability that her weight is between 150 lb and 221 lb. The probability is approximately (Round to four decimal places as needed.) b. If 25 different women are randomly selected, find the probability that their mean weight is between 150 lb and 221 lb. The probability is approximately. (Round to four decimal places as needed.) c. When redesigning the ejection seat, which probability is more relevant? OA. The part (b) probability is more relevant because the seat performance for a single pilot is more important. OB. The part (a) probability is more…

Assume that population mean is to be estimated from the sample described. Use the sample results to approximate the margin of error and 95% confidence interval. n = 36, x = 64.4 seconds, s = 6.5 seconds. The margin of error is seconds. (Round to one decimal place as needed.) an example 4

Use the given confidence interval to find the margin of error and the sample proportion. (0.774,0.800) E = (Type an integer or a decimal.)

Use the given confidence interval to find the margin of error and the sample mean. (15.3,23.7) The sample mean is . (Type an integer or a decimal.) The margin of error is. (Type an integer or a decimal.)

Tina catches a 14-pound bass.  She does not know the population mean or standard deviation.  So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds.  Find the t and calculate a 95% (α = .05) confidence interval.

Use the given confidence interval to find the margin of error and the sample proportion. (0.787,0.811) (Type an integer or a decimal.) p= (Type an integer or a decimal.) E=

Use the confidence interval to find the estimated margin of error. Then find the sample mean. A store manager reports a confidence interval of (46.7,78.3) when estimating the mean price (in dollars) for the population of textbooks. The estimated margin of error is (Type an integer or a decimal.) The sample mean is (Type an integer or a decimal.)