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Multiple Choice Questions 9.To test a hypothesis involving proportions, both np and n(1-p) should a) Be...

Multiple Choice Questions

9.To test a hypothesis involving proportions, both np and n(1-p) should

a) Be at least 30

b) Be equal or greater than 5

c) Lie in the range from 0 to 1

d) There are no specific conditions surrounding the values of n and p

10. The purpose of hypothesis testing is to:

(a) Determine value of the sample mean.

(b) Determine evidence in favor of a parameter.

(c) Determine the appropriate value of test statistic.

(d) Derive the standard error of the data.

11. Chebyshev's Theorem states that the percentage of measurements in a data set that fall within two standard deviations of their mean is:

  1. 75%  
  2. At least 75%  
  3. 88.89%           
  4. At least 88.89%.

12. Normally distributed data are referred to as:

  1. Bell-shaped
  2. Asymmetrical
  3. Skewed
  4. Peaked

Homework Answers

Answer #1

9.To test a hypothesis involving proportions, both np and n(1-p) should

Be equal or greater than 5 (b)

10. The purpose of hypothesis testing is to:

Determine evidence in favor of a parameter.(b) .

11. Chebyshev's Theorem states that the percentage of measurements in a data set that fall within two standard deviations of their mean is:  

At least 75%.(b)

[ according to Chebyshev's rule at least of data lies within k sd of the mean.

here, k = 2

the percentage of data that lies within 2 sd from the mean is :-

at least ]

12. Normally distributed data are referred to as:

Bell-shaped (a)

*** if you have any doubt regarding the problem ,please write it in the comment box...if satisfied,please UPVOTE.

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