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
Example of variance documentation
Primary aging means changes in hair color and skin texture for almost everyone.
During the Pullman strike in Chicago, workers protesting wage cuts did $340,000 in property damage,
“Career choice” for many women means leaving their paid jobs for a number of years when they ...
A sampling of the modified and unusual bases found in tRNAs
Sampling Issues