You take 7 measurements and obtain a sample mean of M7 = 3.51 and a sample variable of V7 = 0.94. Select the value of & such that [M] is a confidence interval for the mean with confidence level 0.9. Enter your answer up to three decimal places. 7

Determine the critical values for the confidence interval for the population variance from the given values. Round your answers to three decimal places. n = 22 and a = 0.02.

Use the confidence interval to find the estimated margin of error. Then find the sample mean. A biologist reports a confidence interval of (2.3,3.3) when estimating the mean height (in centimeters) of a sample of seedlings. The estimated margin of error is

You measure 50 textbooks' weights, and find they have a mean weight of 58 ounces. Assume the population standard deviation is 14.7 ounces. Based on this, construct a 99% confidence interval for the true population mean textbook weight.Report your answers to three decimal places. Confidence Interval = (        ,        )

You measure 38 dogs' weights, and find they have a mean weight of 64 ounces. Assume the population standard deviation is 5.6 ounces. Based on this, construct a 99% confidence interval for the true population mean dog weight. Round Iyour answers to two decimal places. <με Enter an integer or decimal number [more..

statistics practitioner took a random sample of 48 observations from a population whose standard deviation is 23 and computed the sample mean to be 100.   Note: For each confidence interval, enter your answer in the form (LCL, UCL). You must include the parentheses and the comma between the confidence limits.   A. Estimate the population mean with 95% confidence.   Confidence Interval =  B. Estimate the population mean with 95% confidence, changing the population standard deviation to 47;   Confidence Interval =  C. Estimate the population mean with 95% confidence, changing the population standard deviation to 10;   Confidence Interval =

Use the confidence interval to find the estimated margin of error. Then find the sample mean. A biologist reports a confidence interval of (3.6,4.8) when estimating the mean height​ (in centimeters) of a sample of seedlings.    What is the estimated margin of error?

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.

e Levels Noise levels at various area urban hospitals were measured in decibels. The mean noise level in  165  ward areas was  59.2  decibels, and the population standard deviation is  4.2 . Find the  94%  confidence interval of the true mean. Use a graphing calculator and round the answers to one decimal place.

Which confidence interval would lead you to Fail to Reject H0? Group of answer choices Test value: 10 Confidence Interval: 13.1 – 15.1 Test value: 5 Confidence Interval: 5.6 – 6.9 Test value: 5 Confidence Interval: 4.5 – 6.3 Test value: 10 Confidence Interval: 9.2 – 9.8