Answered: If 80% of the applicants rae able to…

If 80% of the applicants rae able to pss a driver’s proficiency road test, find the mean, variance and standard deviation of the number of people who pass the test in a sample

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Related questions

Q: The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation…

A: (a) Obtain the probability that pregnancy will last 307 days or longer. The probability that…

Q: A manufacturer produces widgets that are packaged in boxes of 200. The probability of a widget being…

A: It is given that the number of packaged widget boxes (n) is 200, and the probability, number of…

Q: According to Nielsen Media Research 30% of televisions are tuned in to the NFL Monday Night Football…

A: Note: Thanks for posting the question, in subparts (b) and (c), “exactly 5 or the 15 televisions” is…

Q: You are to write down on a piece of paper the number of credits you are taking this semester. Your…

A: Give the general format for solving this problem as below. Summarize the recorded date of number of…

Q: . Assume that adults have IQ scores that are normally distributed with a mean of 103.1 and a…

A: The adults have IQ scores that are normally distributed with a mean of 103.1 and a standard…

Q: A student takes a multiple choice exam with 10 questions, each with four possible selections for the…

A: Given that, A student takes a multiple choice exam with 10 questions, each with four possible…

Q: Assume that the heights of women are normaly distributed with a mean of 63.6 inches and a standard…

A: Given, Mean = 63.6 Standard deviation = 2.5 Sample size = 100 The objective is to find the…

Q: A history class has 95 members. If there is a 22% absentee rate per class meeting , find the mean…

Q: Suppose there are two groups of students. Group A and Group B both have an average height of…

A: Here there are two groups of students are given named as A and B. And the given parameters of A and…

Q: Mathematics majors generally have one of the highest starting salaries. Suppose the average starting…

A: For Normal distribution z score = (x-μ)/σx

Q: Assume that the salaries of elementary school teachers are normally distributed with a mean $35,000…

Q: Exhibit 6-5 The weight of items produced by a machine is normally distributed with a mean of 8…

A: Given that Mean = 8 Standard deviation = 2 Find P(X = 8 )

Q: High school girls average 80 text messages daily. Assume the population standard deviation is 15…

A: Given information:

Q: The data {9, 5, 5, 9, 2} represent a random sample of the number of days absent from school for five…

Q: During a wisdom teeth removal procedure, 1, 2, 3, or 4 wisdom teeth are removed, depending on the…

A: Central limit theorem As per the Central limit theorem, the sampling distribution of sample mean…

Q: An automatic machine in a manufacturing process is operating properly if the lengths of an important…

Q: 5. The average American adult eats an average of 8.5 gallons of ice cream per year. Assume the…

A: Solution: Let X be the amount of ice cream eaten is normally distributed with mean μ=8.5 and…

Q: IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual…

A: Let X = IQ of an individual. The probability that the person has an IQ greater than 140.

Q: Assume that adults have IQ scores that are normally distributed with a mean of 103.6 and a standard…

A: Given that adults have IQ scores that are normally distributed with, Mean = 103.6 Standard deviation…

Q: The number of thunderstorms in Florida in a calendar year is normally distributed with a mean of 80,…

A: Mean = 80 Standard deviation = 12 Sample size = 8

Q: 13. The variable X measures the time it takes for a delivery truck to complete a route. The mean…

A: Given Mean(μ)=100standard deviation(σ)=18

Q: During a wisdom teeth removal procedure, 1, 2, 3, or 4 wisdom teeth are removed, depending on the…

A: (a) Obtain the mean of the sampling distribution of the sample mean. The mean of the sampling…

Q: 3) An F-1 race has an average length of 305 kilometers with a standard deviation of 72 kilometers.…

Q: The lengths of pregnancies are normally distributed with a mean of 270 days and a standard deviation…

A: We have given that. Mean = 270 , Standard deviation = 15 , We need , Part (a): p(x greater than…

Q: Suppose that heights of women in Utah are normally distributed with a mean of 74 inches and a…

Q: During a wisdom teeth removal procedure, 1, 2, 3, or 4 wisdom teeth are removed, depending on the…

A: We have to find mean and sd.

Q: Suppose that the number of hours that an adult watches in a day has a mean of 2.4 hours and a…

A: Given: i. Calculate the corresponding Z score as follows: The diagram corresponding to the mean…

Q: Regardless of the kind of workout a gym goer does, the mean time spent on the treadmill is 45…

A: According to the given information, we have Mean = 45 Standard deviation = 15 Sample size, n = 36

Q: A concierge is interested in how long it takes to bring passengers to the airport and then return to…

A: (a) First we calculate the mean; The table of calculations is provided below; No. x (x-x¯)2 1…

Q: According to a recent study, 22% of people like sour candy. Suppose we obtain a random sample of 114…

A: Given: p=0.22 n=114

Q: Solve the problem. Assume that mountain lions' weights are normally distributed with a mean of 62.6…

A: We have given that, X be the random variable from normal distribution with mean (μ) = 62.6 ,…

Q: The average person uses 130 gallons of water daily. If the standard deviation is 35 gallons , find…

A: Given that, Mean = 130 Standard deviation = 35 Sample size = 25

Q: 5. The heights of NBA basketball players closely follow a Normal distribution with a mean of u = 79…

A: Z-Score: It is a dimensionless quantity that is used to indicate the signed, fractional,…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 105 and a…

A: Let X denote the IQ scores of adults. Given that X follows N(mean = 105, SD = 20), then Z = (X -…

Q: 1, the mean number of goldfish in the package is 187. find the probability of choosing a package…

A: Thanks for posting the question. Since multiple questions are posted, we will answer one question…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a…

A: Let X is defined as the adult have IQ scores that are normally distributed with mean of 100 and…

Q: 4. The delivery time for all food orders at a fast food restaurant have a mean of 6.7 minutes and a…

A: Let X denote the delivery time for food orders then we are given μx=6.7 & σx=2.1 &…

Q: Suppose the average credit card debt for Americans is $7000 and is not normally distributed with a…

A: Given information: Population mean (u) = $ 7000 Sample size (n) = 40 Sample mean (x) = $ 6500…

Q: Find the probability that one selected subcomponent is longer than 121 cm. Probability = B.…

A: An automatic machine in a manufacturing process is operating properly if the lengths of an important…

Question

5. If 80% of the applicants rae able to pss a driver’s proficiency road test, find the mean,

variance and standard deviation of the number of people who pass the test in a sample

of 300 applicants.

6. The probability that an entering college student will graduate is 0.6. Determine that out

of 4 students

a. All will graduate

b. Atleast 1 will graduate

7. A telephone operator receives 3 calls per hour. Find the probability that he will receive

a. At most 3 calls

b. Atleast 4 calls

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

Suppose that the distance of fly balls hit to the outfielder ( in baseball) is normally distributed with a mean of 250 feet and a standard deviation of 50 feet. We randomly sample 49 fly balls.a. In words define the random variable. X________.b. What is the probability that the 49 balls traveled an average at least of 240 feet. Include a complete shaded graph, and write the probability statement. c. Find the 90th percentile of the distribution of the average of 49 fly balls.
Assume that adults have scores that are normally distributed with a mean of 100 and a standard deviation of 15. For a randomly selected adult, find the indicated probability. Round to 4 decimals. Find the probability of a score greater than 70.
Team A: 6,6,7,7,6,5,6,5,4,5 Team B: 2,2,3,8,9,9,9,9,10,10 a. Compute the mean number of shots made for each team b. Compute the standard deviation for each team c. Compute a Z-score for the individual from team A that made 4 shots d. Compute a Z-score for the individual from team B who made 10 shots e. Using non-statistical language, write several sentences describing the difference in the free-throw shooting abilities between the two teams
3. A study of the amount of time it takes to rebuild the transmission for a 2005 Chevy Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.8 hours. Find the probability that their mean rebuild time exceeds 8.7 hours
All California 5th graders take a standardized test. The mean for the population of 5th graders is 68.9 and the standard deviation for the population is 10. What is the probability of randomly selecting a student who scored a. ≥ 85? b. less than or equal to 85? c. between 80 & 85? d. between 60 & 85?
Suppose Michigan is favored by 17.5 points over Indiana. If you bet a “unit” on Indiana and Indiana loses by 17 or less, you win $10. If Indiana loses by 18 or more points, you lose $11. Note: Both Michigan and Indiana are NCAA Basketball teams. 1)Find the mean and standard deviation of your winnings on a single bet. Assume that there is a 0.5 probability that you will win your bet and a 0.5 probability that you will lose your bet.
The average score of all golfers for a particular course has a mean of 75 and a standard deviation of 3.5. Suppose 49 golfers played the course today. Find the probability that the average score of the 49 golfers exceeded 76. Group of answer choices 0.1293 0.3707 0.0228 0.4772
In a recent year, Washington State public school students taking a mathematics assessment test had a mean score of 276.1 and a standard deviation of 34.4. A random sample of 64 students is drawn from this population. Identify the mean and standard deviation of the sample mean scores. 2. Find the probability that the sample mean score is at least 285.
An automatic machine in a manufacturing process is operating properly if the lengths of an important subcomponent are normally distributed with a mean of 115 cm and a standard deviation of 5.5 cm. A. Find the probability that one selected subcomponent is longer than 117 cm. Probability = B. Find the probability that if 4 subcomponents are randomly selected, their mean length exceeds 117 cm. Probability = C. Find the probability that if 4 are randomly selected, all 4 have lengths that exceed 117 cm. Probability =
Solve the problem.Assume that male Siberian huskies' weights are normally distributed with a mean of 63.6 pounds and a standard deviation of 2.5 pounds. If 90 male Siberian huskies are randomly selected, find the probability that they have a mean weight between 62.9 pounds and 64.0 pounds.
Assume that the heights of women are normally distributed with a mean of 63.6 inches and a standard deviation of 2.5 inches. If 100 women are randomly selected, find the probability that they have a mean height greater than 63.0 inches. O A. 0.9918 O B. 0.0082 O C. 0.2881 O D. 0.8989 ick to select your answer. DELL
According to San Jose Mercury News, children in China average 3 hours a day unsupervised. Most of the unsupervised children live in rural areas, considered safe. Suppose that the standard deviation is 1 hours and the amount of time spent alone is normally distributed. We randomly survey one Chinese child living in a rural area. 1. Find the probability that the child spends more than 5 hour per day unsupervised. 2. What percent of the children spend less than 2 hours per day unsupervised? We randomly survey 100 Chinese children living in a rural area. 1. What is the chance that the average of unsupervised hour for these 100 children is less than 2.9? 2. What is the chance that the sample average of unsupervised hour for these 100 children is between 2.8 and 3.2 hours?