9. A team of 3 players is to be chosen from 4 boys and 5 girls. Find the: (i) probability distribution for the number of girls in the team. (ii) expected value and the standard deviation for the distribution in (i) above.
Q: About 79% of all female heart transplant patients will survive for at least 3 years. Eighty female…
A: Consider that p is population proportion of female heart transplant patients, who are surviving for…
Q: shows the percer ans people are donating blood, what is pected number of people with type od? Why…
A:
Q: ALICE and YouGov conducted an online poll among Americans hotel guests of more than 18 years old to…
A:
Q: About 77% of all female heart transplant patients will survive for at least 3 years. Eighty female…
A: The probability that the sample proportion surviving for at least 3 years will be less than 72% is,
Q: eter is playing a game with two friends. The game is designed to be a game of chance so that…
A: The probability of Peter winning each game is 1/3.
Q: According to the Department of Education, 60% of college students enjoy taking Statistics. Suppose…
A: Let X be the number of students who enjoy taking Statistics in a sample of 200. Given n = 200…
Q: Five males with an X-linked genetic disorder have one child each. The random variable x is the…
A: Suppose, in this case, the random variable x defines the number of children among the give who…
Q: Mean = 126 millimeters,variance = 64,if a random sample of 37 bolts is selected,what is the…
A:
Q: A random sample of 10 houses was taken from the population of 120. The average population per house…
A: Given: sample size n =10 houses population size = N =120. mu = 10 sigma = 4 sample mean = x bar
Q: A project's profit (in thousands), is a random variable with normal distribution. The variance equal…
A: Given information: A project's profit is a random variable with normal distribution. Let us denote…
Q: lecture(12.5): The mean of the population is 50. The standard deviation is 10. If a person row…
A:
Q: Let, x, represent the number of guests interested in gaining experiences of local cuisine…
A: Let, x, represent the number of guests interested in gaining experiences of local cuisine…
Q: uppose you know that the distribution of sample proportions of fifth grade students in a large…
A: Given that Sample size n =100 Mean=0.30 Standard deviation =0.08
Q: The marks of a candidate in statistics examination are normally distributed with a mean of 55 and a…
A:
Q: Q10 If the underlying incidence rate of chronic bronchitis in the first year of life is 0.05. Use…
A: Given, p = 0.05 n = 8 Binomial distribution probability is: P(X = x) = nCxpx(1-p)x
Q: Q2. Identify the Incorrect statement. In a Binomial Distribution each trial: A. Has the same 2…
A: we know; in a binomial distribution- 1. each trials are independent. 2. each trials has only 2…
Q: There are 20 crew members at a given university. You want to calculate the probability that their…
A: The question is about sampling distribution.Given :Selected no. of crew members ( n ) = 20Population…
Q: The temperature distribution of Melbourne has a population mean μ = 25.01, and standard deviation o…
A:
Q: he time it takes for a statistics professor to mark a single midterm test is normally distributed…
A: Given Data: μ=4.9σ=1.9 Using central limit theorem ∑X ~ Normal (n×μ, n×σ2)∑X ~ Normal (269.5,…
Q: Tom works for a fruit company and found that the weight of pineapples are normally distributed with…
A: From the information, mean is 500 and standard deviation is 100.
Q: probability that they average: less than 17 hours per week on homework less than 14 hours per week…
A:
Q: For a Uniform distribution with a low of 0 and a high of 25. Find the probability that a score is…
A: Solution: If X be the uniform random variable, then the probability density function of X is Let X…
Q: There are 8 details and 5 of them are standard. Three details are randomly selected. Find the…
A:
Q: The average number of shoppers at a particular grocery store in one day is 505, and the standard…
A: Answer - The average number of shoppers at a particular grocery store in one day is μ = 505,…
Q: About 68% of all U.S. public high school graduates in 2011 went on to attend college that fall. At…
A: Probability of U.S. public high school graduates in 2011 went on to attend that fall(p)+0.68sample…
Q: The percent of fat calories that a person in America consumes each day is normally distributed with…
A: Given data,μ=33σ=12
Q: 4. Find the probability distribution for the number of tails that occur when 4 coins are tossed. 5.…
A: 4. SOLUTION: Four coins are tossed. The probability distribution for the number of tails are as…
Q: A die is tossed twice. Getting a number greater than 4' is considered a success. Find the mean and…
A: Given that A dice tossed twice n=2 Sample space=S={1,2,3,4,5,6} Required outcomes=(5,6) p=2/6=1/3…
Q: The percent of fat calories that a person consumes each day is normally distributed with a mean of…
A:
Q: In a family with 2 children, the probability that all the children are girls is approximately…
A:
Q: You have two large bins of several thousand plastic beads. Bin A is 60% red beads, Bin B is 54% red…
A: Solution: Let PA and PB be the proportion of red beads of Bin A and Bin B respectively. Proportion…
Q: Three distributions, labeled (a), (b), and (c) are represented below by their histograms. Each…
A: Given: Histograms are given here. Each distribution is symmetrical. Number of measurements are n=10
Q: If X is distributed as a normal distribution with a mean value of 10 and a variance equal to 3 and Y…
A:
Q: The time it takes for a statistics professor to mark a single exam is normally distributed with a…
A:
Q: The critical value used in constructing a 95% confidence interval is ________. Question 16…
A: It is given that Sample mean = 6 Sample standard deviation = 2 Sample size = 8 Confidence interval…
Q: he average lifetime of the bulbs produced in factory A is 2500 hours and their standard deviation is…
A: Given : Factory A : X1 = 2500σ1 = 250 Factory B : X2 = 2100σ2 = 150
Q: From the past experience, 60% of the stocks are profitable. What is the probability that 5of the 7…
A:
Q: Mean is 100, dtandard deviation is 15, IQ values are 100, 120, 88, 92, 65. What is probability in…
A:
Q: For the experiment of flipping a coin three times; (i) present the discrete probability…
A: From the provided information, The total outcomes after flipping a coin three times are as follows:…
Q: The lengths of adult males' hands are normally distributed with mean 192 mm and standard deviation…
A:
Q: Explain why P(X = 2) = P(X = 3) in a binomial distribution where n = 5 and p = 0.5.
A: We have given the following statement about the binomial distribution.
Q: A random sample of 100 items is selected from a population of size 350. What is the probability that…
A:
Q: The typical weight of a donut that you'd buy at Bronuts Bakery is 26 grams. Suppose that x is a…
A: given data normal distributionμ = 26σ= 3
Q: The time it takes for a statistics professor to mark a single midterm test is normally distributed…
A:
Q: The average THC content of marijuana sold on the street is 10.9%. Suppose the THC content is…
A: a. Suppose a random variable X defines the THC content for a randomly selected bag of marijuana that…
Q: Question 17 options: 1) 3.52 to 8.47 2) 4.69 to 7.31 3) 4.66 to 7.34 4) 4.33 to…
A:
Step by step
Solved in 3 steps
- ALICE and YouGov conducted an online poll among Americans hotel guests of more than 18 years old to understand their expectations from hotels in the year 2018-191. This poll showed that 40% of guests were interested in gaining experiences of local cuisine tastings/tours. Suppose you take a random sample of 10 hotel guests. Let, x, represent the number of guests interested in gaining experiences of local cuisine tastings/tours. Find the mean and standard deviation of x. What is the probability that x <=5? Find the probability that x > 7.Suppose the number of cell phones in a household has a binomial distribution with parameters n = 15 and p = 85%. Find the probability of a household having: (a) 5 or 12 cell phonesA bus heading to university is always scheduled to arrive at a certain bus stop at 7:30am. The difference between the actual arrival time and 7:30am is normally distributed with mean 0 and standard deviation of 2 minutes.A student who always has a class at 8am decided to be at the bus stop at 7:28am in order to try to guarantee catching this bus. What is the probability that the student will catch the bus on any particular day?Probability = What is the probability that the student will catch the bus at least 4 times out of 5 days?Probability =
- A standardized exam’s score are normally distributed. In a recent year, the mean test score was 1477 and the standard was 315. The test scores of four students selected at random 1860 1230, 2160, and 1360. Find the Z- score that correspond to each value and determine wether any of the values are unusual. The Z-score for 1860 is-The Z-score for 1230 is-The Z-score for 2160 is-The Z-score for 1360is-The average number of shoppers at a particular grocery store in one day is 505, and the standard deviation is 115. The number of shoppers is normally distributed. For a random day, what is the probability that there are between 200 and 400 shoppers at the grocery store? The answer should be typed as a decimal with 4 decimal places.The weights of all the turkeys sold in Fairfax County in 2020 were recorded in the data set “Fairfax Turkey Weights” found in the histogram. The weights are presented in pounds. There are 235,428 turkeys in this population. Calculate the probability that, in a random sample of eight turkeys, the mean weight is between 17 and 20 pounds. First, draw a picture with the rounded mean and values labeled and the shaded area representing the desired probability. Next, take a picture of your hand drawn sketch and upload it (if you do not have this technology, you may use any other method (i.e. Microsoft paint) to sketch the image). Then, complete this part by standardizing and using the Standard Normal Table to obtain this probability. Show your work “by hand”.
- The average price of a college math textbook is $162 and the standard deviation is $25. Suppose that 11 textbooks are randomly chosen. Round all answers to 4 decimal places where possible. What is the distribution of ¯xx¯? ¯xx¯ ~ N(,) For the group of 11, find the probability that the average price is between $168 and $173.A bartender calculates that every night she works, she has a 60% chance of earning more than $275 in tips. Suppose she works 35 nights in a row. Use a normal distribution to approximate the probability that she earns more than $275 in tips on at least 25 of those nights.D = 129 , E = 56 , F = 134
- There are 11 details and 4 of them are standard. Three details are randomly selected. Find the probability distribution of the random variable X, where X is a number of the standard details among 3 selected details. Find the mean and standard deviation of X.In a family with 2 children, the probability that all the children are girls is approximately 0.25. In a random sample of 1000 families with 2 children, what is the approximate probability that 230 or fewer will have 2 girls? Approximate a binomial distribution with a normal distribution.The length of the western rattlesnake is normally distributed with a mean of 42 inches and a standard deviation of 2.04 inches. Let X be the length of one of these snakes selected at random. Determine the probability that the snake is longer than 45 inches. Report your answer to four decimal places (like .1567).