*00S54.TIME REVANING02:10:57Response time is an important statistic for measuring the effectiveness of a fire department, and is measured as thedifference between the time a fire station receives a call and the time the first piece of fire equipment leaves thestation. The response times for fire departments in a large city are found to have an approximately Normaldistribution, with a mean of 4.5 minutes and a standard deviation of 1.2 minutes. What percentage of fire stationresponse times are under 3 minutes?Find the z-table here.O10.56%O 89.44%O 93.32%Mark this and returnSave and ExitSubmitIIOYA%244.9.8.n!

Here, mean is 4.5 and standard deviation is 1.2.

Answered: Response time is an important statistic…

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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Birth weights at a local hospital have a Normal distribution, with a mean of 110 oz and a standard deviation of 12 oz. The proportion of infants with birth weights above 125 oz is: a. 0.141. b. 0.233. c. 0.159. d. 0.106.
The lengths of pregnancies in a small rural village are normally distributed with a mean of 263 days and a standard deviation of 13 days.In what range would you expect to find the middle 50% of most pregnancies? Between and.
Time to Complete Final Exam. The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. Answer the following questions. Assume that 20% of students did not complete the exam. What was the exam duration?
The incomes of math tutors in a tutoring center of a university are normally distributed with a mean of $1100 and a standard deviation of $150 what percentage of tutors earn less than $900 a month
A company selling a new type of laptop battery advertises that it has a méan lifetime of 5 years. If you were in charge of quality control at the factory, which one of the following standard deviations of battery life spans would you prefer? 2 months. O 2 years O 5 years 27
The typical amount of sleep per night for college graduate students has a normal distribution with a mean of 5 hours. What is the standard deviation of this distribution if 16% of students sleep more than 6.5 hours? A. -1.52 B. -1.55 C. 1.52 D. 1.55
An analyst found that the average amount of money in bank accounts at his/her bank is $2,000 with a standard deviation of $150. What would be the variance?
Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 250 feet and a standard deviation of 44 feet. Let X = distance in feet for a fly ball. Find the 80th percentile of the distribution of fly balls. (Round your answer to one decimal place.)
The lifetimes of lightbulbs of a particular type are normally distributed with a mean of 400 hours and a standard deviation of 10 hours. What percentage of the bulbs have lifetimes between 380 hours and 420 hours? 99.7% 95% 68% 84%
The quantitative subtest of the Graduate Record Exam (GRE) has a mean of 500 and a standard deviation of 100. What GRE score would correspond to a z score of 1.50? a. 600 b. 500 c. 340 d. 650
Suppose there is a city where the mean cost per month of a one-bedroom apartment is $1,500, with a standard deviation of $250. Approximately what percentage of one-bedroom apartments in the city cost between $750 and $1,000?

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