3.The braking distance for a Krazy-Car traveling at 50 mph is normally distributed with a mean of50 ft. and a standard deviation of 5 ft. Answer the following without using a calculator or atable.• What is the likelihood a Krazy-Car will take more than 65 ft. to stop?• What is the probability a Krazy-Car will stop between 45 ft. and 55 ft.?• What percent of the time will a Krazy-Car traveling at 50 mph stop between 35 and 55 ft.?• What is the probability a Krazy-Car will require less than 50 ft. or more than 60 ft. to stop?

Answered: The braking distance for a Krazy-Car…

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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A vendor converts the weights on the packages she sends from pounds to kilograms (1 kg ≈ 2.20 lb). The mean weight of the package was 21 lb with standard deviation of 0.31 lb. After repackaging (converting units), the mean becomes kg (round your answer to 2 decimal places), and the standard deviation becomes kg (round your answer to 2 decimal places).
The average price for a personal computer (PC) is $949.00. If computer prices are approximately normal with a standard deviation of σ = $100, then what amount do the least expensive 10% of personal computer cost less than?
A forest ranger has data on the heights of a large growth of young pine trees. The mean height is 3.2 feet and the standard deviation 0.6 feet. A histogram shows that the distribution of heights is approximately normal. Approximately what proportion of the trees should we expect to be between 4.0 and 4.4 feet tall? A) 0.02 B) 0.07 C) 0.91 D) 0.98
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A ski gondola carries skiers to the top of a mountain. Assume that weights of skiers are normally distributed with a mean of 197 lb and a standard deviation of 43 lb. The gondola has a stated capacity of 25 passengers, and the gondola is rated for a load limit of 3750 Ib. Complete parts (a) through (d) below. a. Given that the gondola is rated for a load limit of 3750 lb, what is the maximum mean weight of the passengers if the gondola is filled to the stated capacity of 25 passengers? The maximum mean weight is Ib. (Type an integer or a decimal. Do not round.) b. If the gondola is filled with 25 randomly selected skiers, what is the probability that their mean weight exceeds the value from part (a)? The probability is (Round to four decimal places as needed.) c. If the weight assumptions were revised so that the new capacity became 20 passengers and the gondola is filled with 20 randomly selected skiers, what is the probability that their mean weight exceeds 187.5 lb, which is the…
A distance is measured six times. The observed values are 572.182 m, 572.140 m, 572.103 m, 572.160 m, 572.125 m, and 572.155 m. All measurements are uncorrelated and their standard deviations are 0.030 m, 0.030 m, 0.030 m, 0.020 m, 0.020 m, and 0.010 m, respectively. Find the least squares estimate for the distance. Use matrices and R in the solution. Write the R commands involved.
The mean value of land and buildings per acre from a sample of farms is $1500, with a standard deviation of $300. The data set has a bell-shaped distribution. Assume the number of farms in the sample is 76. a) Use the empirical rule to estimate the number of farms whose land and building values per acre are between $1200 and $1800. _________ arms (Round to the nearest whole number as needed.)
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