Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find the bone density test scores that can be used as cutoff values separating the lowest 15% and highest 15%, indicating levels that are too low or too high, respectively. Sketch the region. Choose the correct graph below. A. −zα zα A symmetric bell-shaped curve is plotted over a horizontal axis. Two vertical line segments run from the horizontal axis to the curve. One vertical line is at the labeled coordinate negative z Subscript alpha, which is to the left of the curve's center and peak. The other vertical line is at the labeled coordinate z Subscript alpha, which is to the right of the curve's center and peak. The areas under the curve to the left of negative z Subscript alpha and to the right of z Subscript alpha are shaded. Your answer is correct. B. −zα zα A symmetric bell-shaped curve is plotted over a horizontal axis. Two vertical line segments run from the horizontal axis to the curve. One vertical line is at the labeled coordinate negative z Subscript alpha, which is to the left of the curve's center and peak. The other vertical line is at the labeled coordinate z Subscript alpha, which is to the right of the curve's center and peak. The area under the curve between negative z Subscript alpha and z Subscript alpha is shaded. C. −zα zα A symmetric bell-shaped curve is plotted over a horizontal axis. Two vertical line segments run from the horizontal axis to the curve. One vertical line is at the labeled coordinate negative z Subscript alpha, which is to the left of the curve's center and peak. The other vertical line is at the labeled coordinate z Subscript alpha, which is to the right of the curve's center and peak. The area under the curve to the right of negative z Subscript alpha is shaded. D. −zα zα A symmetric bell-shaped curve is plotted over a horizontal axis. Two vertical line segments run from the horizontal axis to the curve. One vertical line is at the labeled coordinate negative z Subscript alpha, which is to the left of the curve's center and peak. The other vertical line is at the labeled coordinate z Subscript alpha, which is to the right of the curve's center and peak. The area under the curve to the left of z Subscript alpha is shaded. The bone density scores are

Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find the bone density test scores that can be used as cutoff values separating the lowest 15% and highest 15%, indicating levels that are too low or too high, respectively. Sketch the region. Choose the correct graph below. A. −zα zα A symmetric bell-shaped curve is plotted over a horizontal axis. Two vertical line segments run from the horizontal axis to the curve. One vertical line is at the labeled coordinate negative z Subscript alpha, which is to the left of the curve's center and peak. The other vertical line is at the labeled coordinate z Subscript alpha, which is to the right of the curve's center and peak. The areas under the curve to the left of negative z Subscript alpha and to the right of z Subscript alpha are shaded. Your answer is correct. B. −zα zα A symmetric bell-shaped curve is plotted over a horizontal axis. Two vertical line segments run from the horizontal axis to the curve. One vertical line is at the labeled coordinate negative z Subscript alpha, which is to the left of the curve's center and peak. The other vertical line is at the labeled coordinate z Subscript alpha, which is to the right of the curve's center and peak. The area under the curve between negative z Subscript alpha and z Subscript alpha is shaded. C. −zα zα A symmetric bell-shaped curve is plotted over a horizontal axis. Two vertical line segments run from the horizontal axis to the curve. One vertical line is at the labeled coordinate negative z Subscript alpha, which is to the left of the curve's center and peak. The other vertical line is at the labeled coordinate z Subscript alpha, which is to the right of the curve's center and peak. The area under the curve to the right of negative z Subscript alpha is shaded. D. −zα zα A symmetric bell-shaped curve is plotted over a horizontal axis. Two vertical line segments run from the horizontal axis to the curve. One vertical line is at the labeled coordinate negative z Subscript alpha, which is to the left of the curve's center and peak. The other vertical line is at the labeled coordinate z Subscript alpha, which is to the right of the curve's center and peak. The area under the curve to the left of z Subscript alpha is shaded. The bone density scores are

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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Question

15%

and highest

15%,

indicating levels that are too low or too high, respectively.

Sketch the region. Choose the correct graph below.

−zα

zα

A symmetric bell-shaped curve is plotted over a horizontal axis. Two vertical line segments run from the horizontal axis to the curve. One vertical line is at the labeled coordinate negative z Subscript alpha, which is to the left of the curve's center and peak. The other vertical line is at the labeled coordinate z Subscript alpha, which is to the right of the curve's center and peak. The areas under the curve to the left of negative z Subscript alpha and to the right of z Subscript alpha are shaded.

Your answer is correct.

−zα

zα

A symmetric bell-shaped curve is plotted over a horizontal axis. Two vertical line segments run from the horizontal axis to the curve. One vertical line is at the labeled coordinate negative z Subscript alpha, which is to the left of the curve's center and peak. The other vertical line is at the labeled coordinate z Subscript alpha, which is to the right of the curve's center and peak. The area under the curve between negative z Subscript alpha and z Subscript alpha is shaded.

−zα

zα

A symmetric bell-shaped curve is plotted over a horizontal axis. Two vertical line segments run from the horizontal axis to the curve. One vertical line is at the labeled coordinate negative z Subscript alpha, which is to the left of the curve's center and peak. The other vertical line is at the labeled coordinate z Subscript alpha, which is to the right of the curve's center and peak. The area under the curve to the right of negative z Subscript alpha is shaded.

−zα

zα

A symmetric bell-shaped curve is plotted over a horizontal axis. Two vertical line segments run from the horizontal axis to the curve. One vertical line is at the labeled coordinate negative z Subscript alpha, which is to the left of the curve's center and peak. The other vertical line is at the labeled coordinate z Subscript alpha, which is to the right of the curve's center and peak. The area under the curve to the left of z Subscript alpha is shaded.

The bone density scores are

enter your response here.

(Use a comma to separate answers as needed. Round to two decimal places as needed.)

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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