A population has a mean μ=79 and a standard deviation σ=18. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=36.       μx=enter your response here ​(Simplify your​ answer.)

Q: Consider a data set S with 51 signals of value 1 and 49 signals of value −1. Calculate the mean x ̄…

A: n1 = 51 and n2 = 49  mean = 51*1 +49*(-1) /100          =0.02

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

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Q: Assume that the weights of quarters are normally distributed with a mean of 5.67g and a standard…

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Q: For a recent SAT reading/writing test which is distributed normally with a mean of 533 and standard…

A: As per Bartleby's answering policy, we can answer only one question with a maximum of three…

Q: To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a…

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Q: In a recent year, 11th grade Ohio public school students taking an English test produced test scores…

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Q: To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a…

A: we have given that  n1=35 ,n2=35 xbar1=44 ,xbar2=46 ,sigma1=4.9, sigma2=4.7  and alpha =0.10 Note :…

Q: we assume the population mean is 98.60 and the standard deviation is 0.65, what is the probability…

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Q: The American Veterinary Association claims that the annual cost of medical care for dogs averages…

A: Given  The annual cost for medical care  for dogs average    =  $100 SD             = $30 for cats…

Q: x represents a random variable with mean 144 and standard deviation 36, then the standard deviation…

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Q: To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a…

A: GivenMake Ax1^=42s1=4.9n1=35Make Bx2^=43s2=4.6n2=35α=0.10

Q: The law of large numbers tells us that as sample size n increases: the sample standard deviation…

A: Correct answer is (c). The sample mean approaches the population mean.

Q: At a local high school, GPA’s are normally distributed with a mean of 2.9 and standard deviation of…

A: Normal distribution in the center is generally denser and basically less dense at the tails. There…

Q: A committee of 14 people is to be chosen from 24 senior students and 7 Junior Students. Determine…

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Q: To compare the dry braking distances from 30 to 0 miles per hour for two makes of​ automobiles, a…

A: we have given that  n1=35 ,n2=35 ,xbar =43,  xbar =44 ,sigma1=4.7 and sigma2=4.5   Note : according…

Q: A set of data items is normally distributed with a mean of 20 and the standard deviation of 8.…

A: z-score: A z-score describes how many standard deviations a data item in a normal distribution lies…

Q: consider a data set S with 51 signals of value 1 and 49 sgnals of value -1. Calculate the mean of S…

A: Given that there are 51 signals with the value of 1 and 49 signals of value -1. The number of…

Q: At α=0.10​, can the engineer support the claim that the mean braking distances are different for the…

A: For make A, sample size n1 = 35, sample mean = 40 and population SD = 4.8 For make B, sample size n2…

Q: Given a sample with a mean of 151 and a standard deviation of 27, find x such that Pr(X < x) =…

A: Given that mean = 151  standard deviation  = 27 We will assume the normal distribution here. X ~…

Q: A fiber-spinning process currently produces a fiber whose strength is normally distributed with a…

A:

Q: Suppose samples of size 100 are drawn randomly from a normal population that has a mean of 20 and a…

A: It  is given that, a normal population that has a mean of 20 and a standard deviation of 5  i.e.…

Q: The standard deviation of the wages of 400 textile workers is $ 12.8. Another sample of 600 textile…

A: Given that  Sample size(n1) =400 Standard deviation =12.8 Sample size (n2)=600 Standard deviation…

Q: To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a…

A: Given that  α=0.10That is,α=10%Level of significance =10%

Q: ize 400 is taken from a population with a mean of 610 and a standard deviation of 15. Find the…

A: Given, n=400 Mean (μ) = 610 Standard deviation (σ) = 15

Q: A population has a mean of 44 with a standard deviation of 15. For the following sample means and…

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Q: To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a…

A: Other parts are not provided by you. Still I have tried to provide you detailed solution

Q: he heights of American adult males are normally distributed with a mean of 177 cm and a standard…

A: Empirical Rule:   68% of the observations lies between one standard deviation from the mean. 95% of…

Q: The reading speed of second grade students in a large city is approximately normal, with a mean of…

A: Given : mean = 92 S.D = 10

Q: Given a population with a mean 176 and standard deviation, σ. (Case A) Repeatedly take samples of…

A: Given: μ=176 and σ=32. 1. Here, n=28. The mean of the sample mean is x=μ and standard deviation of…

Q: The GPAs of all 5540 students enrolled at a university have an approximately normal distribution…

A: The sampling distribution is the representation of all possible samples drawn from the large…

Q: If the population standard deviation is 8, at 95% CI, sample mean is within 4 of the population mean…

A: Introduction: Here we use the formula of sample size n = zα/2×σE2 because the standard error, sample…

Q: professor is concerned that the two sections of college algebra that he teaches are not performing…

A: Given : Claim : Two sections of college algebra that he teaches are not performing at the same…

Q: Suppose a 60-watt light bulb produced by a company has a mean life of 750 hours with a standard…

A: Let us assume the population mean and standard deviation for a distribution is μ and σ. Let a sample…

Q: Suppose medical researchers think that p = 0.70 is the proportion of all teenagers with high blood…

A: Introduction: The Empirical Rule for a normally distributed random variable is as follows:…

Q: A psychopathologist records the number of criminal offenses among teenage drug users in a nationwide…

A: Given: SS = 10800 Sample Size (n) = 1201

Q: The standard deviation of the wages of 400 textile workers is $. 12.8. Another sample of 500 textile…

A:

Q: Consider a sample of push pins. Their weights are measured and found to have a standard deviation of…

A: Given,sample standerd deviation(s)=2.57

Q: Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard…

A:

Q: To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a…

A:

Q: Given a sample with a mean of 94 and a standard deviation of 17, find the probability that a…

A: We have given that a sample with a mean of 94 and a standard deviation of 17.

Q: To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a…

A: There are two independent samples which are make A and make B. We have to test whether the mean…

Q: The A.C Nielsen company reports that about 85.5% of U.S households have a color T.V. Find the mean…

A: The mean number of households have a color T.V is, μ=np=6×0.855=5.13 Thus, the mean mean number of…

Q: The mean age of the employees at a large corporation is 35.2 years, and the standard deviation is…

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Q: A sample of size 26 is selected from a normally distributed population. The sample standard…

A: Given  n=26, s=9.3 standard error= ?

Q: Cotinine levels were measured in a group of non-smokers exposed to tobacco smoke (n =40), the mean…

A: Introduction: Denote μ1, μ2 as the true mean continine levels in nonsmokers exposed to tobacco smoke…

Q: A science teacher claims that the mean scores on a science assessment test for fourth grade boys and…

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Q: Suppose that in 2020 the average song length is 245 seconds, with a standard deviation of 28…

A: Option D is correct.

Q: The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 253.8…

A: GivenMean(μ)=253.8standard deviation(σ)=61.7

Q: Suppose a certain drug causes kidney problems in 10% of patients, and this drug is to be tested on…

A: To find: 1.Standard deviation 2.The population standard deviation is the___ ?

Q: The weights of people in a certain population are normally distributed with a mean of 159 lb and a…

A: