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 length with a standard deviation of 0.98 minute. at α=0.05, can it be concluded that the average differs from the population average?

Select the correct answer. what is the surface area of the victory podium shown here? include all surfaces of the podium, including the bottom. a. 61.5 square feet b. 61.75 square feet c. 65.25 square feet d. 69 square feet

To decrease an amount by 16% what single multiplier would you use

Question 9 of 10 2 points suppose your sat score is 1770. you look up the average sat scores for students admitted to your preferred colleges and find the list of scores below. based on your sat score of 1770, which average score below represents the college that would be your best option? o a. 1790 o b. 2130 o c. 2210 od. 1350