Question:- A sample of mammal body weights is normally distributed, with a mean of 69.5 g and a standard deviation of 9.6 g. There are 10,200 data in the sample. What percentage of these weights is less than 90 g? How many weights in this sample are greater than 90 g?

Question:- A sample of mammal body weights is normally distributed, with a mean of 69.5 g and a standard deviation of 9.6 g. There are 10,200 data in the sample. What percentage of these weights is less than 90 g? How many weights in this sample are greater than 90 g?

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 13PPS

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Question:-

A sample of mammal body weights is normally distributed, with a mean of 69.5 g
and a standard deviation of 9.6 g. There are 10,200 data in the sample.

What percentage of these weights is less than 90 g?

How many weights in this sample are greater than 90 g?

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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