Since the population standard deviation is known, the normal distribution will be used in the calculation of the margin of error, E.E = z?/2? n The value ofz?/2is the z value corresponding to an upper tail area of?2and a confidence level of1 − ?.Common values forz?/2for various confidence levels are given below.Confidence Level??2z?/290%0.100.051.64595%0.050.0251.96099%0.010.0052.576According to the table, for a 95% confidence level, the necessary value forz?/2is _____The survey was conducted among a sample of 63 discount brokers, and we are to assume a known population standard deviation of $14. Therefore, n = ____and ? = ____.

Name: Since the population standard deviation is known, the normal distribut
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Description: Since the population standard deviation is known, the normal distribution will be used in the calculation of the margin of error, E.E = z?/2? n The value ofz?/2is the z value corresponding to an upper tail area of?2and a confidence level of1 − ?.Comm

Answered: According to the table, for a 95%…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

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Since the population standard deviation is known, the normal distribution will be used in the calculation of the margin of error, E.

E = z_?/2

The value of

z_?/2

is the z value corresponding to an upper tail area of

and a confidence level of

1 − ?.

Common values for

z_?/2

for various confidence levels are given below.

Confidence Level

z_?/2

90%

0.10

0.05

1.645

95%

0.05

0.025

1.960

99%

0.01

0.005

2.576

According to the table, for a 95% confidence level, the necessary value for

z_?/2

is _____

The survey was conducted among a sample of 63 discount brokers, and we are to assume a known population standard deviation of $14. Therefore, n = ____and ? = ____.

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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