Question

Use the normalcdf function on a calculator to find the probability that battery life is 20 ± 2 hours (between 18 and 22 hours) for each phone.


Prior values (If needed)
.159
.50

Answer 1

The probability that the battery life is  20 ± 2 hours (between 18 and 22 hours) for each of the phones is:

• Phone C = 15.9%
• Phone T = 50%

What is the probability of the battery life?

Using the normalcdf function on a calculator, the probability that Phone C's battery would last between 18 and 22 hours can be found by inputing the function:

normalcdf (20, IE99, 18, 2)

The result is 0.158655 or 15.9%.

For Phone T, the function is:

normalcdf (20, IE99, 20, 3)

The result is 0.5 or 50%.

Find out more on the normalcdf function at https://brainly.com/question/24273711

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