A certain brand of automobile tire has a mean life span of 34,000 miles and a standard deviation of 2,050 miles. (Assume the life spans of the tires have a bell-shaped distribution.) Question content area bottom Part 1 (a) The life spans of three randomly selected tires are 33,000 miles, 36,000 miles, and 31,000 miles. Find the z-score that corresponds to each life span. For the life span of 33,000 miles, z-score is negative 0.49 −0.49. (Round to the nearest hundredth as needed.) Part 2 For the life span of 36,000 miles, z-score is 0.98 0.98. (Round to the nearest hundredth as needed.) Part 3 For the life span of 31,000 miles, z-score is negative 1.46 −1.46. (Round to the nearest hundredth as needed.) Part 4 According to the z-scores, would the life spans of any of these tires be considered unusual? Yes No Your answer is correct. Part 5 (b) The life spans of three randomly selected tires are 29,900 miles, 38,100 miles, and 34,000 miles. Using the empirical rule, find the percentile that corresponds to each life span. The life span 29,900 miles corresponds to a percentile of enter your response here . The life span 38,100 miles corresponds to a percentile of enter your response here . The life span 34,000 miles corresponds to a percentile of enter your response here . (Round to the nearest whole number as needed.)
A certain brand of automobile tire has a mean life span of 34,000 miles and a standard deviation of 2,050 miles. (Assume the life spans of the tires have a bell-shaped distribution.) Question content area bottom Part 1 (a) The life spans of three randomly selected tires are 33,000 miles, 36,000 miles, and 31,000 miles. Find the z-score that corresponds to each life span. For the life span of 33,000 miles, z-score is negative 0.49 −0.49. (Round to the nearest hundredth as needed.) Part 2 For the life span of 36,000 miles, z-score is 0.98 0.98. (Round to the nearest hundredth as needed.) Part 3 For the life span of 31,000 miles, z-score is negative 1.46 −1.46. (Round to the nearest hundredth as needed.) Part 4 According to the z-scores, would the life spans of any of these tires be considered unusual? Yes No Your answer is correct. Part 5 (b) The life spans of three randomly selected tires are 29,900 miles, 38,100 miles, and 34,000 miles. Using the empirical rule, find the percentile that corresponds to each life span. The life span 29,900 miles corresponds to a percentile of enter your response here . The life span 38,100 miles corresponds to a percentile of enter your response here . The life span 34,000 miles corresponds to a percentile of enter your response here . (Round to the nearest whole number as needed.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
A certain brand of automobile tire has a mean life span of
34,000
miles and a standard deviation of
2,050
miles. (Assume the life spans of the tires have a bell-shaped distribution.)Question content area bottom
Part 1
(a) The life spans of three randomly selected tires are
33,000
miles,
36,000
miles, and
31,000
miles. Find the z-score that corresponds to each life span.For the life span of
33,000
miles, z-score is
negative 0.49
−0.49.
(Round to the nearest hundredth as needed.)
Part 2
For the life span of
36,000
miles, z-score is
0.98
0.98.
(Round to the nearest hundredth as needed.)
Part 3
For the life span of
31,000
miles, z-score is
negative 1.46
−1.46.
(Round to the nearest hundredth as needed.)
Part 4
According to the z-scores, would the life spans of any of these tires be considered unusual?
Yes
No
Part 5
(b) The life spans of three randomly selected tires are
29,900
miles,
38,100
miles, and
34,000
miles. Using the empirical rule, find the percentile that corresponds to each life span.The life span
29,900
miles corresponds to a percentile of
enter your response here
.
The life span
38,100
miles corresponds to a percentile of
enter your response here
.
The life span
34,000
miles corresponds to a percentile of
enter your response here
.
(Round to the nearest whole number as needed.)
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