Measures of Position
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on 14
stion 15
K
estion 16
Points: 0.43 of 1
A certain brand of automobile tire has a mean life span of 34,000 miles and a standard deviation of 2,350 miles. (Assume the life spans of the tires have a bell-shaped distribution.)
For the life span of 37,000 miles, z-score is 1.28
(Round to the nearest hundredth as needed)
(a) The life spans of three randomly selected tires are 33,000 miles, 37,000 miles, and 32,000 miles. Find the z-score that corresponds to each life span.
For the life span of 33,000 miles, 2-score is -0.43
(Round to the nearest hundredth as needed)
Question 16, 2.5.49
Part 5 of 5
For the We span of 32,000 miles, z-score is -0.85
(Round to the nearest hundredth as needed)
According to the z-scores, would the life spans of any of these tires be considered unusual?
O Yes
No
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(b) The We spans of three randomly selected tires are 29,300 milles, 38,700 miles, and 34,000 mes. Using the empirical rule, find the percentile that corresponds to each life span
The Me span 29,300 miles corresponds to a percentile of
The Me span 38,700 miles comesponds to a percentile of
The Me span 34,000 miles corresponds to a percentile of
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