Statistics Examples

, , , ,
Step 1
The z-score converts a non-standard distribution to a standard distribution in order to find the probability of an event. For the z-score of the distribution of means, the standard deviation is divided by the square root of the sample size.
Step 2
Fill in the known values.
Step 3
Simplify the expression.
Tap for more steps...
Step 3.1
Multiply the numerator by the reciprocal of the denominator.
Step 3.2
Multiply by .
Step 3.3
Subtract from .
Step 3.4
Divide by .
Step 3.5
Multiply by .
Step 4
Since the claim is for an exact value of the mean, use the two tailed test.
Step 5
The critical value represents the z-score that provides a significance level of , since use the normal distribution.
Step 6
Since the z-score of the test statistic is less than the critical value, there is sufficient evidence to support the hypothesis.
Enter YOUR Problem
Mathway requires javascript and a modern browser.
Cookies & Privacy
This website uses cookies to ensure you get the best experience on our website.
More Information