# Hypothesis Testing for the Mean (Large Samples)

Hypothesis Testing for the Mean (Large Samples)

1. Use the method specified to perform the hypothesis test for the population

mean . WeatherBug say that the mean daily high for December in a large Florida cit is F. WFLA weather suspects that this temperature is not accurate. A hypothesis test is performed the determine if the mean is actually lower than F. Assume that the population standard deviation of = F. A sample of mean daily temperatures for December over the past 40 years gives F. At = 0.01, does the data provide sufficient evidence to conclude that the mean temperature is lower than F.

a. Use the critical value z0 method from the normal distribution.

1. H0 :

Ha :

2. =

3. Test statistics:

4. P-value or critical z0 or t0.

5. Rejection Region:

6. Decision:

7. Interpretation:

b. Use the P-value method.

1. H0 :

Ha :

2. =

3. Test statistics:

4. P-value or critical z0 or t0.

5. Rejection Region:

6. Interpretation:

https://brainmass.com/statistics/hypothesis-testing/hypothesis-testing-mean-large-samples-264011

#### Solution Preview

Hypothesis Testing for the Mean (Large Samples)

1. Use the method specified to perform the hypothesis test for the population

mean . WeatherBug say that the mean daily high for December in a large Florida cit is F. WFLA weather suspects that this temperature is not accurate. A hypothesis test is performed the determine if the mean is actually lower ...

#### Solution Summary

The solution examines hypothesis testing for the mean. The p-value method is determined.