Name: 6. According to the World Almanac, the average local cell phone call length was reported to be 2.27 minutes. A random sample of 20 phone calls showed an average of 2.98 minutes in call length...

Answer part G

Extracted text: Name: 6. According to the World Almanac, the average local cell phone call length was reported to be 2.27 minutes. A random sample of 20 phone calls showed an average of 2.98 minutes in call length with a sample standard deviation of 0.98 minute. At a = 0.05, can it be concluded that the average differs from the population average? Assume the population is normally distributions. a. State the hypotheses and claim. b. Calculate the test statistics. Round to two decimals, if needed. C. Calculate the degrees of freedom. d. Find the P-value (from the table for calculator). Round P-value to four decimals, if needed. e. Make the decision about null hypothesis. f. State the conclusion in terms of the claim. Calculate the 95% confidence interval for the average local cell phone call length. Does this support your finding in part e? g. hp