A population of values has a normal distribution with μ = 159.6 and σ = 39.4. You intend to draw a random sample of size n = 48. Round your answers to three decimal places. What is the mean of the distribution of sample means? What is the standard error of the sample mean?

Q: A random variable of 7 independent observation of a normal variable gave  Ex = 35.9 Ex2 = 186.19…

A: From the provided information, n=7∑x=35.9∑x2=186.19∑x-x2=2.074

Q: According to a travel website, workers in a certain country lead the world in vacation days,…

A: for find out the confidence interval firstly we have to find out the mean and standard deviation for…

Q: Before any order is shipped, inspectors at Alvarez Manufacturing test a sample of finished units for…

A: Given n= 49 Sample mean =814 Population standard deviation=35

Q: Estimate the percentage of the U.S. population that reacts negatively to the Confederate flag. a.…

A:

Q: A binomial probability experiment is conducted with 15 independent trials with 20% probability of…

A: given data  P(success) = p = 0.20 sample size(n) = 15 x = no. of successes.  P(x=X) = nCxpxqn-x…

Q: A men's soccer team plays soccer zero, one, or two days a week. The probability that they play zero…

A: x P(x) x*P(x) 0 0.2 0 1 0.5 0.5 2 0.3 0.6

Q: The graph of the discrete probability below represents the number of live births by a mother 46 to…

A: Given problem Given that   The graph of the discrete probability below represents the number of…

Q: Let X,Y, and Z be independent exponential random variables with an average of 1. Let W=max(Y,Z) and…

A: X,Y and W~exp(1)  T=min(X,Y)  W=max(Y,Z)

Q: The median ACT scores for four-year colleges to follow normal distribution with a mean of 24 points…

A:

Q: Automobile repair costs continue to rise with the average cost now at $367 per repair. Assume that…

A: Given that.   X~N( μ , ?)   μ=367    , ?=88   Z-score =( x - μ )/?

Q: . Using Data set 1 about the number of calls to an agent in a call centre between 9:00 AM and 11:00…

A: Given: Day No of calls 1 10 2 3 3 8 4 10 5 10 6 6 7 5 8 3 9 9 10 5 11 4…

Q: 93901 93901 93901 93901 93901 93901 93901 93901 93901 93901 93901 93901 93901 93901 93901 93901 775…

A: Given information: Square feet data: 821, 2658, 1638, 2607, 729, 2253, 1529, 1980, 3074, 2607, 948,…

Q: The tensile strength of silicone rubber is thought to be a function of curing temperature. A study…

A:

Q: You take all possible samples of size 100 from a very large population of values. The mean of the…

A: given data sample size(n) = 100population mean (μ) = 550population sd(σ) = 50here sample size…

Q: A random sample of the newest model of Samsung Galaxy smartphones being sold over the Internet had…

A: The question is about confidence interval   Introduction : i ) To construct confidence interval for…

Q: (c) The predictors that were found to have significant coefficients from the t tests are the same…

A: Please find the explanation below. Thank you.

Q: ou wish to test the following claim π1≠π2 at a significance level of 0.02.       Ho:π1=π2…

A:

Q: Suppose 20% of the marbles packed in a box are red in colour. 4 marbles are chosen at random. Find…

A: Given n=4, p=0.20 Binomial pmf P(X)=nCx px(1-p)n-x

Q: d) Compute the residual based on the observed head circumference of the 25-inch-tall child in the…

A: Given data: x y 27.75 17.5 24.5 17.1 25.5 17.1 26 17.3 25 16.9 27.75 17.6 26.5 17.3…

Q: QUESTION 4 According to the Risk Impact Matrix chart shown previously, which item (shown by letter)…

A: The risk impact matrix with 1-10 scale by considering Lo in Horizontal axis and Hi in vertical axis…

Q: population consists of 15 items, 10 of which are acceptable. In a sample of four items, what is the…

A: Given that  Sample size n =4 Population size N=15 Number of acceptable M=10 X~Hypergeometric(n,N,M)…

Q: DE Is also referred to as the test for overall significance A regression model with only 1…

A: Solution:  We want to match the concepts with their definition.

Q: Suppose an electric-vehicle manufacturing company estimates that a driver who commutes 50 miles per…

A: given data  x = recharge time  uniform distribution X~U(70,110) E(x) = ?

Q: finds the average number of seeds is 41 with a standard deviation of 18. Construct a 99% conti…

A:

Q: Suppose you want to have $400,000 for retirement in 25 years. Your account earns 6% interest. a) How…

A:

Q: A survey found that the American family generates an average of 17.2 pounds of glass garbage each…

A: Average = μ = 17.2 pounds Standard deviation = σ = 2.5 pounds Sample size = n = 38

Q: A roulette wheel has 38 slots, numbered 1 to 36, and two green slots labeled 0 and 00. Jim, a dealer…

A: Given: Total slots = 38 slots (1 to 36, 0 and 00) The ball has an equally likely chance of landing…

Q: A study was performed concerning risk factors for carotid-artery stenosis (arterial narrowing) among…

A: Given: Group 1: No stenosis  n1 = 156 X1 = 5.3 s1 = 1.4 Group 2: Stenosis    n2 = 108 X2 = 5.1 s2 =…

Q: The revenue of a new product is $60 per unit. The production cost is given by a discrete…

A: Given information: The revenue of a new product is $60 per unit. The production cost is given by a…

Q: Assume a significance level of a=0.01 and use the given information to complete parts (a) and (b)…

A: Givenoriginal claim is The mean pulse rate (in beats per mintue) of a certain groupof adult males is…

Q: Find the critical value for testing Ho: 11.15 versus Ha: μ< 11.15 at significance level 0.005 for a…

A:

Q: Q3.  Using Data set 2 about the process times taken for the last xxxxx parts (from data part n1 to…

A: Given Information: The process times are taken : n1= 6. , n2= 76. which means we have to take the…

Q: The president of Doerman Distributors, Inc. believes that 30% of the firm's orders come from first…

A: given data  n = 100 p = 0.30

Q: A researcher wants to investigate whether pet ownership varies by gender. The table below shows the…

A: A researcher wants to investigate whether pet ownership varies by gender. The table below shows the…

Q: Suppose the average annual in state tuition and required fees for a public 4-year institutions…

A: K

Q: he question is asking to check whether the program is successful, hence, shouldn't be the null…

A: Given: Before After 39 44 25 25 39 39 6 13 40 44 27 34 30 34 22 29 21 30…

Q: Compute​ P(X) using the binomial probability formula. Then determine whether the normal distribution…

A: given data,n=57p=0.60x=26q=1-p=1-0.6=0.4here we  have to use normal approximation for the binomial…

Q: K The data to the right represent the top speed (in kilometers per hour) of all the players (except…

A: From the given information we find the solution

Q: Multiple Linear Regression A nursing instructor wishes to see whether a student's grade point…

A: Please note that as per our guidelines we can answer the first three sub-parts. Please repost the…

Q: You wish to test the following claim that π1<π2 .  You use a significance level of 0.005.…

A:

Q: You are to test the following hypotheses: Ho: M ≥ 1200 Ha: < 1200 A sample of size 36 produces a…

A: GivenH0:M≥1200Ha:M&lt;1200sample size(n)=36Mean(x)=1148standard deviation(s)=160

Q: An instructor was interested in how framing impacted her students' feelings about her grades. She…

A: An instructor was interested in how framing impacted her students' feelings about her grades. She…

Q: *9.29 Let Y₁, Y₂,..., Y, denote a random sample of size n from a power family distribution (see…

A: Given that, let Y1,Y2,......,Yn denotes a random sample of size n from a power family distribution,…

Q: 99% of the values in at distribution with 18 degrees of freedom will be less than or equal to__

A: The degrees of freedom is 18.

Q: Consider the following cdf of the random variable Y. F (y) = — ; 0 < y < 4. Calculate P (1<y < 2).…

A: Given,cdf of the random variable Y is:F(y) = y216; 0&lt;y&lt;4

Q: For a test of Ho: p=0.50, the sample proportion is 0.37 based on a sample size of 100. Use this…

A: given data  H0  : p = 0.50Ha : P&lt;0.50n = 100p^ = 0.37

Q: (c-1) Calculate t. (Round your answer to 3 decimal places.) tcalc (c-2) We reject the null…

A: The regression output is given.

Q: The mean selling price (in $ thousands) of the homes was computed earlier to be $357.0, with a…

A: Given: mean = $357.0 Standard deviation = $160.7 X~normal distribution w.k.t, Z=(X-μ)/σ

Q: You’re interested in whether there is a difference in the number of recent stressful life events…

A: 1) You’re interested in whether there is a difference in the number of recent stressful life events…

Q: A drug is used to help prevent blood clots in certain patients. In clinical​ trials, among 4880…

A: Given that, sample size is n= 4880  and X= 200 best point estimate of proportion,  p^ = X/n  =…