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Author Question: The z score for the standard normal distribution a. is always equal to zero. b. can never be ... (Read 97 times)

amal

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on: Jun 24, 2018
The z score for the standard normal distribution
 a. is always equal to zero.
   b. can never be negative.
   c. can be either negative or positive.
   d. is always equal to the mean.

Question 2

A sample of 22 bottles of soft drink showed a variance of .64 in their contents. At the 5 level, determine whether or not the standard deviation of the population is significantly different from .7 ounces. Use the critical value approach.


leannegxo

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Reply #1 on: Jun 24, 2018
Answer to Question 1

c

Answer to Question 2

H0: 2 = .49
Ha: 2  .49
chi-square = 27.43 which is between 10.283 to 35.479; do not reject H0


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amal

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Reply #2 on: Jun 24, 2018
Thank you


leannegxo

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Reply #3 on: Jun 24, 2018
No problemo


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