The average local cell phone call length was reported to be 3.75 minutes. A random sample of 21 phone calls showed an average of 3.95 minutes in length with a standard deviation of 0.91 minutes. At = 0.05, can it be concluded that the average local cell phone call length is more than the population average? Assume that the population is approximately normally distributed.

Perform the following steps of hypotheses testing and draw a conclusion. State the hypothesis. Use these symbols >, <, =,

Ho: minutes Ha: minutes 2. We should use

distribution. (fill in the blank using z or t) 3. Type of test:

tailed test (fill in the blank using left, right, or two 4. Find the critical value(s). Copy, paste and use if needed

Critical value(s) =

5. Test statistic or test value rounded to three decimal places =

6. Make the decision. Since the test statistics falls under the

region (Fill in the blank with these words: acceptance, or critical), we the null hypothesis. (fill in the blank with these words: reject, or fail to reject)

7.Summarize the results. Therefore, there is

evidence to

the given claim. (Fill in the blank with enough or not enough, and support, or reject)