8. Construct the confidence interval for the population variance for the given values. Round your answers to one decimal place. Answer: Lower endpoint: n = 24, s² = 3.9, and c = 0.99 Upper endpoint:

you take a sample in equal 25 of test scores from a population. The sample mean is 38, and the population standard deviation is six. Five. What is the 95% confidence interval of the mean?

Use the confidence interval to find the margin of error and the sample mean.   (.364,0.500)

ssume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15 (as on the Wechsler test).  Find the following:                                                                                                         The Z-value that separates the bottom 18% from the others.                                                                                                         The Z-Value for the 95 percentile.                                                                                                         What is the IQ score that separates the bottom 18% from the others?                                                                                                         The 95 percentile is? A. 113.725 B. -.92 C. 75.325 D. -.915 E. 1.645 F. 86.275 G. 124.675 H. .915

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=49​, x=55.1 ​seconds, s=4.8 seconds       The margin of error is nothing seconds.

q3-  For categorical data: Select one or more: a. We can't apply boxplot to show its distribution b. We can apply aggregate functions. c. We can't use histogram to show its distribution. d. The interval between units is the same.

Use the confidence interval to find the margin of error and the sample mean. (1.77, 2.01) The margin of error is

The mean is 146 and the standard deviation is 35. A score of 41 is how many z-scores below the mean?

Use the confidence interval to find the margin of error and the sample mean. (0.456,0.620) The margin of error is The sample mean is

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.