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 45.9 months and a standard deviation of 6.8 months.A) What percent of Quick Start batteries last less than 48.5 OR more than 75.9 months? %. Keep your answer in percentage of 2 decimal places.B) What percent of Quick Start batteries last no more than 70.9 OR not less than 71.7 months? %. Keep your answer in percentage of 2 decimal places.C) What percent of Quick Start batteries last no more than 49.9 OR more than 56.8 months? %. Keep your answer in percentage of 2 decimal places.D) What percent of Quick Start batteries last less than 41.9 OR not less than 61.7 months? %. Keep your answer in percentage of 2 decimal places. Quick Start Company makes 12-volt car batteries. After many years of product testing, the company knowsthat the average life of a Quick Start battery is normally distributed, with a mean of 45.9 months and astandard deviation of 6.8 months.A) What percent of Quick Start batteries last less than 48.5 OR more than 75.9 months?%. Keep your answer in percentage of 2 decimal places.B) What percent of Quick Start batteries last no more than 70.9 OR not less than 71.7 months?%. Keep your answer in percentage of 2 decimal places.C) What percent of Quick Start batteries last no more than 49.9 OR more than 56.8 months?%. Keep your answer in percentage of 2 decimal places.D) What percent of Quick Start batteries last less than 41.9 OR not less than 61.7 months?%. Keep your answer in percentage of 2 decimal places.

Mean is 45.9 months and standard deviation is 6.8 months

Answered: Quick Start Company makes 12-volt car…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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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 45.9 months and a standard deviation of 6.8 months.

A) What percent of Quick Start batteries last less than 48.5 OR more than 75.9 months?
%. Keep your answer in percentage of 2 decimal places.

B) What percent of Quick Start batteries last no more than 70.9 OR not less than 71.7 months?
%. Keep your answer in percentage of 2 decimal places.

C) What percent of Quick Start batteries last no more than 49.9 OR more than 56.8 months?
%. Keep your answer in percentage of 2 decimal places.

D) What percent of Quick Start batteries last less than 41.9 OR not less than 61.7 months?
%. Keep your answer in percentage of 2 decimal places.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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