17. From a population of 500 elements, a sample of 225 elements is selected. It is known that the variance of the population is 900. The standard error of the mean is approximately. 30 1.4847 2 1.1022

A sample of 100 scores has a mean of 58, a variance of 160, and an estimated standard error of 4. Which of these values is guaranteed to increase if the sample size is decreased to 10? a. none of these is likely to be changed very much by decreasing n.   b. the value of the variance   c. the value of the mean   d. the value of the standard error

An analysis of variance produces SS total=90 and SS within=40 For this analysis what is SS  between?  50  130  3600 Cannot be determined without additional information

Consider the following data: 7 8 P(X = x) 0.2 0.2 0.2 0.2 0.2 %3D Step 2 of 5: Find the variance. Round your answer to one decimal place. 5.

Suppose Y = 6x-8, where x is a random variable with mean 2 and a variance of 4/3. Determine the variance of the random variable y

Suppose the average height of all humans is normally distributed with a mean of 72 inches and a variance of 18 inches. Use this information to answer the following three questions. 1. Determine P(75<x<84). 2. Determine P(x>80). 3. Determine P(x < 65).

Chapter 11 Applied Medical (a company that makes medical devices) wants to lower the number of days that their employees are taking off by starting a new incentive program. A random sample of employees working at Applied Medical is taken and the number of days they took off in the previous year was recorded. Then, the incentive program was implemented. The number of days absent in one year after the incentive program was implemented was also recorded. The data is given below. Test the claim that the incentive program cuts down on the number of days missed by employees. Find the P-Value. Employee A B D E F G H Days Absent 3 8 2 Before Incentive Days Absent 8 2 1 1 After Incentive O 0.8367 0.0058 O 0.0115 O 0.9942 4.