Quick Start Company makes 12-volt car batteries. After many years of product testing, the company knows that the average life of a Quick Start battery is normally distributed, with a mean of 44.4 months and a standard deviation of 7.7 months. (a) If Quick Start guarantees a full refund on any battery that fails within the 36-month period after purchase, what percentage of its batteries will the company expect to replace? (Round your answer to two decimal places.)

13.79% of the batteries will Quick Start Company expect to replace on any battery that fails within a 36-month period after purchase.

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Mean of the average life of a Quick Start battery = 44.4 months

Standard deviation of the average life of a Quick Start battery = 7.7 months

2. If Quick Start guarantees a full refund on any battery that fails within the 36-month period after purchase, what percentage of its batteries will the company expect to replace?

For finding the percentage of batteries will Quick Start Company expect to replace within a 36-month period, we make this calculations:

1. Find the z-score for 36 months:

z-score = 36 - 44.4/7.7 = - 8.4/7.7 = -1.09

2. Now, find p for z-score = -1.09, using a z-score table:

p = 0.1379

13.79% of the batteries will Quick Start Company expect to replace on any battery that fails within a 36-month period after purchase.

step-by-step explanation:

sry but any answer choices

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|