Using the standard Normal distribution tables, what is the area under the standard Normal curve corresponding to Z < 0.75? a.0.6915 b.0.7223 c.0.9127 d.0.7734At a large university, a simple random sample of five female professors is selected, and a simple random sample of 10 male professors is selected. The two samples are combined to give an overall sample of 15 professors. The overall sample is: a.a simple random sample. b.biased due to imbalance. c.a stratified sample. d.All of the answer options are correct.

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Answered: Using the standard Normal distribution…

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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Using the standard Normal distribution tables, what is the area under the standard Normal curve corresponding to Z < 0.75?

a.
0.6915

b.
0.7223

c.
0.9127

d.
0.7734
1. At a large university, a simple random sample of five female professors is selected, and a simple random sample of 10 male professors is selected. The two samples are combined to give an overall sample of 15 professors. The overall sample is:
  
  a.
  a simple random sample.
  
  b.
  biased due to imbalance.
  
  c.
  a stratified sample.
  
  d.
  All of the answer options are correct.

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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