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Author Question: What effect will an outlier have on a confidence interval that is based on a small sample size? ... (Read 108 times)

futuristic

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on: Jul 24, 2018
What effect will an outlier have on a confidence interval that is based on a small sample size?
 
  A) The confidence interval will be wider than an interval without the outlier.
  B) The interval will be smaller than an interval without the outlier.
  C) The interval will be the same with or without the outlier.
  D) The interval will reveal exclusionary data.

Question 2

The tread life of a particular brand of tire is a random variable best described by a normal distribution with a mean of 60,000 miles and a standard deviation of 1500 miles.
 
  What is the probability a certain tire of this brand will last between 56,850 miles and 57,300 miles? A) 0.0180 B) 0.9813 C) 0.4920 D) 0.4649


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InfiniteSteez

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

A

Answer to Question 2

A


futuristic

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Reply #2 on: Jul 24, 2018
Both answers were spot on, thank you once again


InfiniteSteez

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Reply #3 on: Jul 24, 2018
Great! Please up vote :D


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