Mathematics, 07.09.2021 03:40 jordandabrat

There are two cell phone companies. Company 1 offers 18 hours of continuous talk time and has a standard deviation of 2 hours.

Company 2 offers 20 hours of talk time and has a standard deviation of 3 hours.

3. a. Pick one of the two companies and sketch out a normal curve for it. Be sure to label it and use vertical lines to locate the mean and 1 standard deviation on either side of the mean.

b. What is the range of values for each company to be within 1 standard deviation?

c. What is the range for the 68-95-99.7 distribution?

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