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Author Question: Which of the following describes what the property of minimum variance means? A) The sampling ... (Read 61 times)

123654777

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on: Jun 24, 2018
Which of the following describes what the property of minimum variance means?
 
  A) The sampling distribution in question has the smallest variation of all possible unbiased sampling distributions.
  B) The shape of the sampling distribution is approximately normally distributed.
  C) The center of the sampling distribution is found at the population parameter that is being estimated.
  D) The center of the sampling distribution is found at the population standard deviation.

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 1200 miles. What is the probability a certain tire of this brand will last between 57,480 miles and 57,840 miles?
 
  A) .0180 B) .4920 C) .9813 D) .4649


ktidd

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

A

Answer to Question 2

A


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