Question

Statistics...

Answer 1

Student 1: Think about how much time we spend using cell phones. Have you ever wondered which cell phones would allow you to talk for the most time without having to recharge?

Student 2: Like which phones have the longest battery life?

Student 1: Exactly. I did some research and found that one cell phone manufacturer, ChatLong, claims that their phones average 18 hours of continuous talk time with a standard deviation of 2 hours.

Student 2: I found another cell manufacturer, Talk-a-Lot, that claims 20 hours of talk time and a standard deviation of 3 hours.

Clearly my company, Talk-a-Lot, is better. The talk time is longer.

Student 1: Their average talk time is better, but their standard deviation is bigger.

Student 1: I have an idea. Let's each buy one of these phones and then try them out ourselves.

Student 2: You're on!

Student 1: Then we'll analyze our data as a sample using statistical methods to determine which company actually offers the best deal.

Student 2: Which phone company do you think is best?

Answer 2

basically which phone company has the longer talk time, when you do the math..?

Answer 3

Also will need a sketched out normal curve for the company ChatLong. with vertical lines to locate the mean and 1 standard deviation on either side of the mean. & the range of values for both companies to be within the 1 standard deviation.