Suppose the mean height for first grade Children is 90 Cm and the Standard deviation S 12 cm. Take a Sample of Size 7=36

Q: an exam score has a mean of 506 and a standard deviation of 100. What exam score corresponds to a…

A: μ  = 506 , σ = 100  Z~ N(0,1)

Q: he scores on a test have a mean of 100 and a standard deviation of 15.  If a personnel manager…

A: given data, assume the variable is normally distributed.μ=100σ=15If a personnel manager wishes to…

Q: Assume that adults have iq scores that are normally distributed with a mean of 100 and a standard…

A: Solution: Let X be the adults IQ score has normally distributed with mean μ=100 and standard…

Q: A successful basketball player height is 203 cm. His converts to the z score of 4.10. How many…

A: Consider, X = 203  z-score = 4.10 z-score is a numerical value that tells the number of standard…

Q: According to data for a​ population, 3-year-old boys have a mean height of 38 inches and a standard…

A: given data normal distributionμ = 38 inchesσ = 2 inchesfor x = 42 inchespercentile = ?

Q: The state of California had a mean annual rainfall of 23 inches and a standard deviation of 4…

A: Answer: From the given data, Let X denotes the mean annual rainfall of California Here, X is…

Q: The Stanford-Binet IQ test is scaled so that scores have a mean of 100 and a standard deviation of…

A: Let "X" be the Stanford-Binet IQ test

Q: the mean and the standard deviation of the sampling distribution. Compute the mean and standard…

A: According to the Central limit theorem, if the sample size, i.e, n is greater than 30, the…

Q: In a study, the sample is chosen by dividing the population into voting precincts, and sampling…

A: Explanation: Here given the question  Find the what is the sampling method  Finally the option d…

Q: The salaries of a company's employees are normally distributed with mean 15000 and standard…

A:

Q: Cars on I-40 have a mean speed of 73 MPH at a certain mile marker, with a standard deviation of 8…

A: Let X = speed of the car. X~N73, 82 To calculate P[70<X<75]. So,…

Q: A sample of 90 items has mean 55 and standard deviation 3. A second sample of 110 items has mean 60…

A:

Q: Suppose that striped dolphin lengths are normally distributed with a population standard deviation…

A: The formula for the minimum sample size is as follows: Here, zα/2 is the critical value at 95%…

Q: The mean rate for cable t.v.from a sample of 80 households was $29 per month with a standard…

A:

Q: The weights of miniature horses are roughly normally distributed with a mean of 230 pounds and…

A: Given : The weights of miniature horses are roughly normally distributed with a mean of 230 pounds…

Q: How many minutes did it take him to finish the face?

A: It is given that the distribution of finishing time for men was approximately normal with mean 242…

Q: Find the mean and standard deviation for each uniform continuous model- deviation" answers to 4…

A: From the given information, Consider, X and Y are the two random variables that follows uniform…

Q: A researcher collects the distances between survey respondents and the closest grocery store. The…

A:

Q: uppose the distribution of heights of a group of 200 children is normal with a mean of 150…

A:

Q: The scores on a standardized test are approximately normal with a mean of 83 and a standard…

A: Let T be minimum score needed to be in top 8%

Q: The lengths of individual fish in a pond have a non-Normal distribution with a mean of 18.6 cm and a…

A:

Q: The heights of women in a particular community are normally distributed with a mean of 65 inches and…

A: We have to find given proportion..

Q: he mean yearly rainfall in Sydney, Australia, is about 137 mm and the standard deviation is about 69…

A: Mean Standard deviation Yearly rainfall is normally distributed.

Q: For a random sample of 90 overweight men, the mean number of pounds that they were overweight was…

A:

Q: The scores on a marketing exam were normally distributed with a mean of 67 and a standard deviation…

A: Given data normally distributed with mean (μ) =67, standard deviation (σ) =9.Let ‘X’ be a normal…

Q: 37 38 37 30 36 47 40 47 27 36 30 26 41 41 51 44 31 40 38 44 39 53 37 42 45 44 44 41 46 37 Do the…

A: We have given the data set of sample size 30. We have to calculate sample standard deviations. (b)…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 270 days…

A: Let "X" be the lengths of pregnancies in a small rural village in days.

Q: A study was conducted on shoe sizes of students, reported in European sizes. For the men, the mean…

A: Answer:- Given, In European sizes , the mean size = 43.96  standard deviation = 2.24  Also given…

Q: The scores on an exam were normally distributed with a mean of 75 and a standard deviation of 8.…

A: Introduction :-  Let ,  X = Exam scores of students. Given that, X ~ N ( 75 , 64 )  Here we have to…

Q: For a random sample of 10 men, the mean head circumference is x-bar= 57.3 cm and the sample standard…

A:

Q: The heights of 18 year old men are normally distributed with a mean of 67 inches and a standard…

A: Given information- Population mean, µ = 67 inches Population standard deviation, σ = 3 inches We…

Q: If the range of a data set is 64, find the approximate value of the standard deviation, using the…

A: Given information- Range = 64 We have to find the approximate value of the standard deviation using…

Q: Scientists find that a particular species of caterpillar has a mean mass of 32 grams with a standard…

A:

Q: A sample of size 50 will be drawn from a population with mean 73 and standard deviation 8. Find the…

A: Given Information: To find out the 19th percentile of the sample mean.

Q: 2.In the mid-19thcentury, Sir Francis Galton demonstrated, through extensive data collection, that…

A:

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

A: Introduction: If P4 denotes the 4th percentile, then observations lie below P4 with 4% or 0.04…

Q: A simple random sample of 36 observations was taken from a large population. The sample mean and the…

A:

Q: standardized test has a pop. mean of 152 and a standard deviation of 16. What would be the median…

A: Given that Mean=M=152, Standard Deviation=Sd=16 X~N(M=152,Sd=16)

Q: Assume that adults have IQ scores that are normally distributed with a mean of 100.7 and a standard…

A: Given Data : Population Mean,μ = 100.7 Population Standard Deviation,σ = 18.9

Q: Suppose that annual precipitation is normally distributed, with mean 50 inches, and standard…

A: Obtain the 65th percentile of the precipitation distribution. The 65thpercentile of the…

Q: With a mean of 10 and standard deviation of 5. Assume that the population data are normally…

A: The mean is 10 and the standard deviation is 5.

Q: The lengths of brook trout caught in a certain Colorado stream are normally distributed with a mean…

A: Mean==14Standard deviation==3