e. What is the expected number of climbers that will reach the summit?(3) The probability that a truck will be going over the speed limit on I-77 South between Dobson and Elkin isabout 75%. Suppose a random sample of five trucks are observed on this stretch of I-77.a. Find the mean of this probability distribution. Show the formula and your work.b. Interpret the mean in the context of the problem.c. Find the standard deviation of this probability distribution. Round your answer to 2 decimal places.d. Find the probability that exactly 3 of the observed trucks are speeding.e. Find the probability that less than 3 of the observed trucks are speeding.(4) Consumer Reports rated airlines and found that 85% of the flights involved in the study arrived on time(that is, within 15 minutes of the scheduled arrival time). Consider a random sample of 200 flights.What is the probability that 175 flights will arrive on time?а.b. What is the expected number that will arrive on time?c. What does this value mean in the context of the problem?(5) The following information will also be used in the related discussion forum for this portion of the module.A realistic estimate for the probability of an engine failure on a transatlantic flight is 1/14000. Use thisprobability and the binomial probability formula or your calculator to find the probabilities of 0, 1, 2, and 3engine failures for a three engine jet and the probabilities of 0, 1, and 2 engine failures for a two-engine jet.Carry all numbers to as many decimal places as your calculator will display. (You should have sevenanswers to this question when complete.)

Answered: (3) The probability that a truck will…

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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Suppose there are 5 students in a room. The mean age is 20.0 years, and the median age is 19. If the youngest person leaves and is not replaced by another person, what happens to the mean and the median? The mean either increases or stays the same, and the median increases. The median either increases or stays the same, and the mean increases. The mean increases, but it is impossible to determine whether the median increases, decreases, or stays the same.
As a sample gets smaller and smaller, the sample mean tends to get closer and closer to the population. mean A. TrueB. FalseC. None of the above
Please do B and C.
Page 13. Each of the variables displayed in the histograms below has a mean of 14.5, a range of 8, and 59 observations. Rank the three variables according to their standard deviations, from the smallest to the largest. (Hint: No calculation is needed) A. X, Y. Z B. Y, X, Z C. Z, Y. X D. X, Z, Y E. Z, X, Y For questions #14-18, determine whether cach statement is TRUE or FALSE. A=TRUE B=FALSE 14. A circle graph showing preferred methods of transportation such as train, bus, automobile and walking, displays a sector with a 75° angle for "walking." This means that 75% of the responses showed walking as the preferred form of transportation. 15. The sample variance is calculated by averaging the differences from the mean of each data value. 16. Suppose data set B is obtained from data set A by adding 2 to every value of data set A. If the mean of data set A is 5, then the mean of data set B is 10 17. The IQR is a measure of spread of the data about the median 18. In a simple random sample…
A dice is rolled three times a. Find the probability of getting exactly 2 fours b. Find the mean, variance, and standard deviation
Nutritionist Nina decided to work in a gym one summer. She really wanted to use her knowledge of statistics and decided to research the age of people who show up at the station's spinning class. Let us now assume that we know the age distribution of the participants in the spinning classes and that it follows the normal distribution with an average of 30 years and a standard deviation of 3 years. Questions 1-3 deal with participants in spinning classes. 1. What is the probability that a randomly selected spinner participant is over 33 years old? 1. 8% 2. 15.9% 3. 84.1% 4. 99.9% 2. One morning, 9 students attended the spinning class. What is the probability that their average age is lower than 33 years? 1. 8% 2. 15.9% 3. 84.1% 4. 99.9% 3. john really wants to attend spinning class but is afraid of being older than 99% of the participants. How old would he have to be for that to happen? 1. At least 23 years old 2. At least 33 years old 3. At least 37 years old 4. At least 45 years old
SOLVE THE FOLLOWING BELOW. GRAPH MUST BE SHOWN
Find the standard deviation of the following -14, -4,-10, -12, 5, -1.
Answer the Ff.
The weights of steers in a herd are distributed normally. The variance is 10,000 and the mean steer weight is 1100⁢lbs. Find the probability that the weight of a randomly selected steer is between 919 and 1180⁢lbs. Round your answer to four decimal places.
Yellow one is tab #1
According to a study done by De Anza students, the height for Asian adult males is normally distributed with an average of 66 inches and a standard deviation of 2.5 inches. Suppose one Asian adult male is randomly chosen. Let X = height of the individual. Find the probability that the person is between 64 and 69 inches. The middle 40% of heights fall between what two values?Write the probability statement. State the two values. (Round your answers to one decimal place.) x1,x2 ch6#9

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