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Chapter 8: Q 64. (page 542)

Judy is interested in the reading level of a medical journal. She records the length of a random sample of100words. The histogram displays the distribution of word length for her sample. Determine if the Normal/Large Sample condition is met in this context.

Short Answer

Expert verified

The condition of normality is met.

Step by step solution

01

Given Information

The graph is as below:

02

Explanation

Observations from graph:

  • The distribution shape is left skewed containing two outliers.
  • Distribution is left skewed. Therefore it can be refer to as normal distribution normally.
  • As sample size is 100>30.
  • Applying Central Limit Theorem, since sample size is larger; so distribution is normally normal.
  • So, we can use condition for tdistribution.

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