Identify the sampling techniques used in each scenario. e. surveying movie-goers as they exited the late movie, researchers determined that only young adults under the age of 22 see movies in the theater anymore.

Q: An estimate of the mean time taken by this group of workers is: A. 51.7 min B. 47.0 min C. 49.7 min…

A: First we convert histogram into frequency table,   class frequency(f) 10-20 0 20-30 2 30-40…

Q: According to an expert for the automotive industry, 68% of Americans know how to drive a manual…

A: Given that p= 0.68  and n = 220

Q: In a Harris poll of 630 human resource professionals, 37.4 % said that they had at least one child…

A: Confidence interval is an interval such that the probability of the unknown parameter to be included…

Q: The one-time fling! Have you ever purchased an article of clothing (dress, sports jacket, etc.),…

A: Givenp=0.05sample size(n)=10Let "x" be the no.of persons has done a one-time…

Q: a) Let 3, 1,3,0,3,2,2,0, 1, 2 be ten independent observations from a binomial experiment of four…

A: (a) X~Bin(n=4, β) Sample size=10 Note: According to Bartleby guidelines expert solve only one…

Q: A company producing steel nails receives an order for 5000 nails of length 50 mm. Due to external…

A: We have given that A company producing steel nails receives an order for 5000 nails of length 50 mm…

Q: After giving a statistics exam, Professor Dang determined the following five-number summary for her…

A: Box plot represents the 5 number summary of the data where the 5 number summary are : minimum, 1st…

Q: What sample size is needed to give a margin of error of 4% with a 95% confidence interval? (Give…

A: From the provided information, Margin of error (E) = 4% = 0.04 Confidence level = 95%

Q: b) f(x; 0) = . 0, } Find the maximum likelihood estimator (MLE) of 0. elsewhere

A: It is given that the probability density function of X is f(x; θ) = { (θ + 1)•xθ,   0 < x < 1…

Q: K (a) Identify the shape of the distribution, and (b) determine the five-number summary. Assume that…

A: Note  1. Skewed distribution has large tails either top or bottom sides. 2. Symmetric distribution…

Q: a) Suppose that Y₁, Y2,..., Yn is a random sample from a normal distribution with parameter mean 0…

A:

Q: +N a) A 4 of Hearts? C w b) A Heart or Spade? W +4 → of > > ♥ above, As shown a classic deck of…

A: We have given that A classic deck of cards = 52 Number of black cards = 26 Number of red cards = 26…

Q: A1, A2, A3,..., An Xi and Y = -√n. a random sample of size n fr population Suppose i) Show that the…

A: It is given that  X follows N(θ, 1), then E(X) = θ and V(X) = 1, And the moment genarating function…

Q: Statistics show that 40% of men renew their car licenses after the deadline date. Assume that this…

A: Givenp=0.40sample size(n)=7Let "x"be the no.of men renew their car licenses after the deadline…

Q: Show that ₁ ln(X₁) is a sufficient estimator of 0. [Hint: Use one-parameter regular exponential…

A: It is given that  X has the following pdf  f(x) = (θ + 1).xθ , 0 < x < 1

Q: a) b) c) What is the parameter space of 8? Find the maximum likelihood estimator (MLE) of 8. What is…

A: It is given that the probability density function is  f( x; θ ) = { ( θ + 1 )•xθ ,   0 < x < 1…

Q: a) Let 3,1,3,0, 3, 2, 2, 0, 1, 2 be ten independent observations from a binomial experiment of four…

A: Given  X~Bin(n=4, β) Sample size=10

Q: b) An academic Professor conducted a research aimed at exploring the experience and challenges faced…

A: Given that, an academic Professor conducted a research aimed at exploring the experience and…

Q: Calculate the approximate price relatives to two decimal places for the MTN and Vodacom stocks over…

A: Consider the following table: Stock Price p0 Qty q0 Price p1 Qty q1 p0q0 p0q1 p1q0…

Q: Calculate approximately to 3 decimal places the composite quantity index for all three stocks for…

A: Consider the following table: Stock Price p0 Qty q0 Price p1 Qty q1 p0q0 p0q1 p1q0…

Q: Let X₁, X₂,..., X and Y₁, Y2...., Ym be random samples from populations with moment generating 25…

A: Solution: From the given information, the moment generating functions of X and Y are

Q: i) Find the sampling distribution of the statistic W = X₁ + 2X₂ X3 + X₁ + Xs. ii) What is the value…

A:

Q: c) Suppose that the results of carrying out the hypothesis test lead to non-rejection of the null…

A: Given Information: The null and alternative hypotheses are: H0:θ-0.90H1:θ=0.60 Consider Y as the…

Q: The View Key pregnancies in a small rural village are normally distributed with a mean of 260 days…

A: given data, normal distribution μ=260σ=13let X be the length of a randomly recorded pregnancy in the…

Q: Commuters A recent random survey of 100 individuals in Michigan found that 78 drove to work alone. A…

A: Given: n1 = 100 X1 = 78 n2 = 140 X2 = 60 Confidence level = 90% Formula Used: 90% Confidence…

Q: a) Suppose that Y₁, Y2,..., Y₁ is a random sample from a normal distribution with parameter mean 0…

A:

Q: Calculate the mean speed in miles per hour attained between zero (0) and (7) for this distribution.…

A: Calculate the mean speed in miles per hour attained between zero (0) and (7) for this distribution.…

Q: Compute the test value. Always round z score values to at least two decimal places. Z= X

A:

Q: Refer to the accompanying data display that results from a sample of airport data speeds in Mbps.…

A: Given: n = 50 X = 17.598 sx = 16.01712719 Formula Used: df = n-1

Q: Problem 5) The cumulative distribution function of random variable Vis: v <-5 a) What is E[V]? b)…

A: Given that: The cdf of random variable V is: FVv=0                    v&lt;-5v+52144    -5≤v&lt;71…

Q: The First Peoples of BC have always had a close relationship with the land. "Traditional Ecological…

A: The data relates to quinquennial temperature departures of Canada starting from 1950 up to 2015. The…

Q: An experiment consists of randomly drawing 3 cards from a standard deck (without replacement). The…

A: From the provided information, it is considered that: The total no. of cards in a standard deck,…

Q: Assume that, on average, healthy young adults dream 90 minutes each night, as inferred from a number…

A: Followings are the explanation of the question Use the one sample t test, because the population…

Q: Assume that a simple random sample has been selected from a normally distributed population and test…

A: Suppose μ is the population mean time between failure.

Q: Find the mean, μ, for the binomial distribution which has the stated values of n and p.  Round your…

A: given;X has binomial distributed.i.e. X~binomial(n,p)where n = 28, p=0.28

Q: 1. Consider Rolling a Fair six sided Dice with sides of 1 through 6. Consider rolling this dice 70…

A: Given that  The probability of getting any number in a six sided Dice is 1/6 each.

Q: Let X1, X2, X3, Xn denote a random sample of size n from the population distributed with the…

A:

Q: Decide whether the following results from a statistical study represent a sample statistic or a…

A: Solution: According to the guidelines we are answering first question if multiple questions are…

Q: b) c) What is the parameter space of 8? Find the maximum likelihood estimator (MLE) of 0. What is…

A: It is given that the probability density function of X is f(x; θ) = { (θ + 1)•xθ,   If 0 &lt; x &lt;…

Q: Suppose you are comparing seven groups in an ANOVA, and your result is significant. You want to…

A: Bonferroni's is used to reduce the chance of type I error happening. It reduce the false positive…

Q: (a) a range of years centered about the mean in which about 68% of the data (tree-ring dates) will…

A: From given data we have : mean μ=1236 standard deviation σ=33

Q: ) Let X₁, X₂,..., X and Y₁, Y₂, ..., Ym be random samples from populations with moment generating 25…

A:

Q: • Two dice are rolled. What is the probability of getting a sum equals 10? Probability = (Round to 4…

A: GivenTwo dice are rolled

Q: 1. a) b) c) Let X and Y have the joint probability density function fx, y(x, y) = Cxy², 0<x<y<1,…

A:

Q: (a) Determine and interpret the quartiles. The first quartile is Q₁ = - (Round to four decimal…

A: Sorted data : {-0.14, -0.11, -0.10, -0.08, -0.05, -0.05, -0.04, -0.04, -0.02, -0.02, -0.02, -0.02,…

Q: Problem 5) If X is a continuous uniform random variable with expected value E[X] = 7 and variance…

A: 5) The expected value and variance of uniform distribution are 7 and 3, respectively.

Q: joint pdf of the random variables X₁ and X2, show that X₁ and X₂ are independent and that M(t1, t₂)…

A:

Q: Question 2 Concrete placed on a structure was subsequently cored after 28 days, and the following…

A: In hypothesis testing, there are always two hypotheses - null and alternative. These two hypotheses…

Q: Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 2600 grams and…

A: GivenGestation period of 32-35 weeks haveMean(μ)=2600standard deviation(σ)=70Gestation period of 40…

Q: Match the regression equation with the appropriate graph. (Note that the x- and y- axes are broken.)…

A: given regression equation is  y^ = 1.72x +84.99