d)(87%, 93%)e)(79%, 85%)Construct the requested confidence interval.In a random sample of 60 computers, the mean repair cost was $150 with a standard deviation of $36.14.Construct a 90% confidence interval for the population mean.a) ($537, $654)b) ($138, $162)c) ($141, $159)d) ($142, $158)

Answered: d)(87%, 93%) e)(79%, 85%) Construct the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In the month of July, the average electrical Eversource bill in Amherst Massachusetts is $72 with a standard deviation of $6. Suppose that the electrical bills are normally distributed, what is the probability that the average electrical bill in Amherst for 15 residents is less than $75? Select one: A. 78.45% B. 23.27% C. 97.38% D. 31.21%
Fifteen randomly selected college students were asked to state the number of hours they slept the night before. The resulting data are: 6 16 7 8 7 796 3 11 9 15 4 7 9 a) Find the mean. b) Find the median. c) Find the standard deviation. d) According to Chebysev's Theorem, at least 75% of the times will fall between what two amounts? Is the theorem accurate for this set of data? Why of Why not? e) Are any of the reported hours "unusually" high? Are any of the reported hours unusually low?
Which set of data would probably show a strong positive linear correlation? a) the number of defective light bulbs produced and the time of the day when they were manufactured b) marks on a history test and the heights of the students c) the colour of cars sold and the annual income of the car buyers d) the height of corn in a field and the amount of precipitation during the growing season acer
Can you answer c,d, and e please
Which set of data would probably show a strong positive linear correlation? a) the number of defective light bulbs produced and the time of the day when they were manufactured b) marks on a history test and the heights of the students c) the colour of cars sold and the annual income of the car buyers d) the height of corn in a field and the amount of precipitation during the growing season
The heights of senior girls are normally distributed with a mean of 65 inches and a standard deviation of 2.2 inches. What percent of senior girls are … 4) Under 66 inches tall? Group of answer choices A.) 67.36% B.) 55.96% C.)93.57% D.)78.23%
Given a set of normally distributed scores with the mean of 20.00 and SD of 5.00, what proportion of scores are a) between 10 and 28 b) between 15 and 32
Part 4. 1. Examine the data set below that represents a sample. A.) the average of the sample; B.) the median of the enéchantion; C.) the mode of the sample; D. ) the minimum and maximum values; J.) the extent; F.) the first, second and third quartiles; G.) the interquartile interval; H.) the standard deviation of the sample; I.) The variance of the sample.

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d)(87%, 93%) e)(79%, 85%) Construct the requested confidence interval. In a random sample of 60 computers, the mean repair cost was $150 with a standard deviation of $36. 14. Construct a 90% confidence interval for the population mean. a) ($537, $654) b) ($138, $162) c) ($141, $159) d) ($142, $158)