Answered: certain satellite components are shown…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 14PPS

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The lifetimes (in units of 106 seconds) of certain satellite components are shown in the frequency distribution given in the dataset below. Carry out an appropriate statistical test to determine whether the data is normally distributed.

*Groups*	*Frequencies*
300 to 305	7
305 to 310	15
310 to 315	37
315 to 320	78
320 to 325	81
325 to 330	35
330 to 335	10
335 to 340	6

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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