Which of the following is NOT a requirement of constructing a confidence interval estimate for a population​ variance? Choose the cor

Question

Which of the following is NOT a requirement of constructing a confidence interval estimate for a population​ variance?
Choose the correct answer below.
A. The sample is a simple random sample.
B. The population must be skewed to the right.
C. A histogram of the data must be​ bell-shaped.
D. The population must have normally distributed values.

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Caroline 3 days 2021-09-13T13:48:38+00:00 1 Answer 0

Answers ( )

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    2021-09-13T13:50:16+00:00

    Answer:

    B

    Step-by-step explanation:

    To construct a confidence interval estimate, the sample must be randomized. Hence option A is a requirement.

    The data must follow normal distribution pattern or at least nearly normal distribution condition. Hence, option D is also a must for confidence interval estimate.

    Normal distribution can be shown with a data with histogram graph with a bell-shaped showing a balanced proportion of data, hence option C is also true.

    While option B with population skewed to the right shows negative distribution which will have mean to the right of the median. Hence B is not the requirement for confidence interval estimate for a population variance.

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