Purchase Solution

# Test of hypothesis

Not what you're looking for?

A national car insurance company stated that in 1987, the average yearly car insurance cost for a family in the U.S. was \$931. In the same year, a random sample of 39 families in california resulted in a mean cost of X = \$975 with a standard deviation of = 30.50. Does this suggest that the average insurance cost for a family in california in 1987 exceeded the national average? Perform the hypothesis test at a significance level of 5%.

##### Solution Summary

The solution tests the hypothesis that the average insurance cost for a family in california in 1987 exceeded the national average.

##### Solution Preview

Null Hypothesis:Ho:M =931

Alternative Hypothesis:H1: M >= 931

Mean=M = 931

Standard deviation =s= 30.50

sample size=n= 39

sx=standard error of mean=s/square ...

##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

##### Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

##### Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.