The screws produced by a certain machine were checked by examining samples of 12. Thc following table shows the distribution of 128 samples according to the number of defective items they contained No. of defective ina sample of 12 No. of 0. 1 3 4 5 6. 7 total samples 6. 19 35 30 23 1 128 Fit a binomial distribution and find the expected frequencies if the chance of machine being defcctive is Find the mean and variance of 2 the fitted distribution.

Q: A random sample of 1026 adults in a certain large country was asked "Do you pretty much think…

A: Sample size=n=1026 No. of success =x=533 Point estimate(p^)=xn=5331026=0.519

Q: Say the probability of a large earthquake in any given year in California is about 0.0125. Let X be…

A: Geometric Distribution :  The geometric distribution represents the number of failures before you…

Q: a. What is the standard error of the mean in men? What is it in women? Assume that the sampling was…

A: n1 = 4620 n2 = 6228 x1 = 3.8 x2 = 2.4 s1 = 6.7 s2 = 4.6

Q: Experiment: A six-sided die is rolled 18 times and the number of twos that come up is tallied. If…

A: It is interpreted that a die (with six-side) is rolled 18 times. Each roll can be defined as success…

Q: The time spent commuting from home to work for all employees at a very large company has a normal…

A: Solution

Q: A random sample of 10 subjects have weights with a standard deviation of 9.7246 kg. What is the…

A: We have given that  Sample size=n=10 Sample standard deviation=9.7246

Q: sume that hybridization experiments are conducted with peas having the property that for​ offspring,…

A: given data, p(pea has green pods)=0.75p=0.75n=40q=1-0.75=0.25we have to find out the mean and…

Q: 7. 4 light bulbs were selected from 15, of the 15 there were 5 defectives. What is the probability…

A: Given that ; N= 15 K = 5 n= 4  X= 3  By using hyper geometric distribution we get answer

Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A:

Q: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots…

A: given data normal distributionμ = 125σ = 30.2n = 35

Q: ! Variable Xis to be modeled using a uniform distribution. The lower bound value is 5, and the upper…

A:

Q: The average wait time to get seated at a popular restaurant in the city on a Friday night is 13…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: Assume M&Ms are randomly selected and grouped into bags of 45 each and that 20% of all M&Ms are…

A: (5)  Mean = np = 45*0.20 = 9.0

Q: A manufacturer produces a commodity where the length of the commodity has approximately normal…

A: Let X be the random variable from normal distribution with mean (μ) = 11, standard deviation (σ) =…

Q: Read the z statistic from the normal distribution table. For a one-tailed test (lower tail) using a…

A: Given Information: alpha = 0.0436  '

Q: 10. Assume that a randomly selected subject is given a bone density test. Those test scores are…

A: Let X be a continuous random variable of bone density test score is normally​ distributed with a…

Q: The patient recovery time from a particular surgical procedure is normally distributed with a mean…

A: Hi! Thank you for the question, As per the guidelines, we are allowed to answer three sub-parts at a…

Q: The height distribution of U.S females has a population mean of 64 inches and a standard deviation…

A:

Q: What type of distribution does X follow? State the name and parameters. b. Compute the expected…

A: A dart is to be thrown at a target. The probability the dart will hit the target (yes or no) on a…

Q: The average height of adult males in the United States is 68.5 inches. Assume that a = 3.1 inches…

A: Given,sample size(n)=15mean(μ)=68.5standard deviation(σ)=3.1

Q: If x represents a random variable with mean 131 and standard deviation 40, then the standard…

A: Given that ; u = 131  ? = 40 Sample size ( n) = 100 Here we use the concept of standard normal…

Q: Suppose that the number of points scored in a game comes from a normal population with an average of…

A: Here points scored follows Normal distribution with mean 12 and SD 9. Here we need to use the…