the length of human pregnancies is right skew distributed with an average pregnancy length of 266 days and standard deviation of 16 days.for this problem do we need to apply the central limit theorem? A. what is the probability a randomly seleted pregnancy last more than270 days B. suppose a random sample of 49 pregnancies is obtained. Describe the sampling distribution of the sample mean length of human pregnancies C. what is the probability that random sample of 49 pregnancies has a mean pregnancies period last more than 270 days?

Q: Assume that the distribution of the score on a recent midterm is bell shaped with population mean μ…

A: Given that,the original distribution of the data is normal or bell shaped Population mean Population…

Q: The    length    of    time    taken    on    the    SAT    for    a    group    of    students…

A:

Q: Suppose I want to sample the household incomes for EBR parish. Het's say I start with a simple…

A: Central limit theorem: If the population follows normal distribution or the sample size is large…

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: Assume the standard deviation is 40000 dollars. Suppose you take a simple random sample of 53…

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

A: Finding the value of z at lowest 14-1.08032 ( From Excel =NORM.S.INV(0.14))Finding the value of z at…

Q: The length of human pregnancies is approximately normally distributed with mean 266 days and…

A: Solution

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: Assume thAt scores on a standardized test are known to follow a bell shaped distribution with a mean…

A: L

Q: Suppose that a category of world class runners are known to run a marathon (26 miles) in an average…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: Suppose that you draw a random sample from a population where you know the population mean is 36 and…

A:

Q: The annual salary for one particular occupation is normally​ distributed, with a mean of about…

A: Given information- Population mean, µ = 120,000 Population standard deviation, σ = 20,000 Sample…

Q: Suppose a professor uses a normal distribution to assign grades in her math class. • She assigns an…

A: Given: z score Grade >2.2 A <-2 F 0.9 < z<2 B -1 < z< -0.8 D

Q: In an certain species of newt, offspring are born either green or black. Suppose that 60% of these…

A: Given Information:Sample proportion() = 60% =0.6Sample size (n) = 185

Q: 24. Assume that the distribution of heights for a standard oak tree after 10 years has a mean of 15…

A:

Q: Solve for D)

A:

Q: Suppose a professor uses a normal distribution to assign grades in her math class. • She assigns an…

A:

Q: Use the Central Limit Theorem to find the mean and standard error of the mean of the sampling…

A:

Q: Find the probability that the mean height of the sample is greater than 58 inches.

A: Assume that the height of adult females in the United States is approximately normally distributed…

Q: Use the Central Limit Theorem to find the mean and standard error of the mean of the sampling…

A:

Q: A leading magazine reported at one time that the average number of weeks an individual is unemployed…

A: We have given that  X~N(mu,sigma ^2) mu=29 ,sigma =3.5 Z-socre =(x-mu)/sigma

Q: Suppose that the amount of time that students spend studying in the library in one sitting is…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: 3.The number of flaws per square yard in a type of carpet material varies, with mean 1.6 flaws per…

A: Note: As per guidelines we are supposed to solve only one question at a time. Kindly repost the…

Q: Assume that for the population of all unemployed individuals in Minnesota, the population mean…

A:

Q: Use the Central Limit Theorem to find the mean and standard error of the mean of the sampling…

A: Given : μ = 223 , σ= 55 and n= 29

Q: Find the mean and standard deviation of the indicated sampling distribution of sample means. Then…

A: Sample size=25

Q: In a large community, 44% of the people have blood type O. Let p be the proportion of people who…

A:

Q: 6. Use R: Suppose the yearly income of people in Minnesota is normally distributed with mean 45700…

A: The given mean is 45700 and standard deviation is 2830.

Q: The mean cost of a set of new set of Queen sheets having a 500 thread count is $65.40 with a…

A: We have given that, Population mean (µ) = $65.40, standard deviation (σ) = $7.41 sample size (n) =…

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: A random sample of 40 students at a local high school were asked if they carpool to school. Assume…

A: In this case, each student has the only options of "carpool to school" (defined as success) or "not…

Q: Use the Central Limit Theorem to find the mean and standard error of the mean of the sampling…

A: From the given information, the mean is $247 and the standard deviation is $63. The sample size is…

Q: The average amount of money spent for lunch per person in the college cafeteria is $7.36 and the…

A:

Q: Suppose that a distribution of 300 items has mean 115 and standard deviation 4. Find the z-score of…

A: Given, mean (μ) = 115 standard deviation (σ) = 4 x = 121

Q: About 73% of all female heart transplant patients will survive for at least 3 years. Sixty female…

A: The objective of this question is to find the probability that the sample proportion of female heart…

Q: A waitress keeps track of the tips she earns and knows that her mean tip is 15% with a standard…

A: We have been given that a waitress keeps a track of the tips that she earns and knows that her mean…

Q: Suppose the average amount of money that people spend on their pets per month is 47 dollars, with a…

A: From the Standard Normal table, the bottom of 30% is -0.5244. The average amount of money spent on…

Q: Use the Central Limit Theorem to find the mean and standard error of the mean of the sampling…

A: Given: μ=234σ=67n=26

Q: A population has a mean of 300 and a standard deviation of 40. Suppose a simple random sample of…

A:

Q: Sketch the distribution, show the mean and standard error, and shade the part of the curve…

A: Given: p=0.34 n=1000

Q: 7. Use R: Suppose the yearly income of people in Minnesota is normally distributed with mean 45,700…

A: Here, μ=45,700, σ=2,830, and n=10.

Q: Use the Central Limit Theorem to find the mean and standard error of the mean of the sampling…

A: Given x-bar=234 Standard deviations=57 n=26

Q: About 79% of all female heart transplant patients will survive for at least 3 years. Eighty female…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.