Question

  

Given the linear correlation coefficient r and the sample size n, determine the critical values of r and use your finding to state whether or not the given r represents a significant linear correlation. Use a significance level of 0.05.

Provide an appropriate response. 

A 28-year-old man pays $165 for a one-year life insurance policy with coverage of $140,000. If the probability that he will live through the year is 0.9994, what is the expected value for the insurance policy?

$84.00 

($164.90)

$1,39,916.00 

($81.00)

5 points

If a club consists of 9 ​members, how many different arrangements of​ president, vice-president, and secretary are​ possible?

Question 2 out of 9.

Assume you know the standard deviation of test scores is 10 and that the distribution is normal. You sample 16 scores and find that the sample mean is 25. Find the p value for a two-tailed test of the hypothesis that the population mean is 20.

The standard error of the mean is 2.5. You then find the probability of a sample mean more than 25-20 = 5 from the population mean of 20. This is the probability outside 15 and 25 given a distribution with a mean of 20 and a standard deviation of 2.5. The probability is .0455.

use the GSS 2014 data on education from Chapter 5 "The Normal Distribution" Construct the 95% confidence interval for the mean number of years of education for lower-class and working-class respondents.Lower-Class - Mean (12.11) Standard Deviation (2.83) N (122)