15) What are the reasons for sampling rather than population? a) Saving time b) Saving money c) Impossible to check all the members of the population d) All of the above

Q: In the population of a small town, the average IQ is 100. A team of scientists wants to test a new…

A: Followings are the Explanation of the question Use the one sample t test Given that, Hypothesized…

Q: If n=130 and ˆpp^ (p-hat) =0.29, find the margin of error at a 90% confidence level Give your…

A: Given that,  n = 130,p^=0.29 The level of significance is,

Q: For the experiment described below, let x determine a random variable, and use your knowledge of…

A:

Q: You are interested in carrying out a statistical test of income in a particular neighborhood. Your…

A: given data n = 64x¯ =27500σ = 10000α = 0.01claim : μ < 30000

Q: s it possible for this to be written out thanks

A: a)

Q: 2) Simplify the algebraic expression (there is no solving here). 2(x + 12) - x - (3x + 16) + 5

A: It is given that  The algebraic expression is 2(x + 12) - x - (3x + 16) + 5

Q: A certain disease has an incidence rate of 0.5%. If the false negative rate is 4% and the false…

A: Given certain disease has an incidence rate of 0.5%. If the false negative rate is 4% the false…

Q: Suppose V~ Geom(p) with p = 0.5 and that W = 2V. Find P(W ≥ 8), giving your answer correct to two…

A: Given that  V~Geom(p), p=0.5 The pmf of V is, P(V=v) = (1−p)v−1p, v=1, 2, 3,.....               =…

Q: As a project manager you have the following data for your current project in a hospital.…

A: given data mean(μ) = 22 weeksvariance (σ2) = 4 weeks2standard deviation (σ) = 2 weeksP(x<22…

Q: A multiple choice quiz has 15 questions, each with 4 choices with one correct answer. What is the…

A: From the provided information, A multiple choice quiz has 15 questions that is n = 15 Each has 4…

Q: QUESTION 10. A casino offers a game that it calls "five in a row". The rules of the game are simple:…

A: The expectation of a discrete random variable X, denoted by E(X), is defined as a measure of central…

Q: Problem #5: Suppose that X and Y have the following joint probability density function. f(x, y) =…

A:

Q: A = { 3, 0, 1 } B = { y, x }  what is the cardinality of A x P(B) ?

A: Given that, A = {3,0,1}  B ={ y , x }  Power set of B = {{},{x},{y},{x,y}}  Generally cardinality is…

Q: For each problem, show the proper work needed for FRQ’s and find the answer. For problems with a *,…

A: Given: On the seventh day of Christmas, my true love gave to me: Seven Swans A-swimming. The…

Q: Messages arrive at an electronic message center at random times, with an average of 8 messages per…

A: Let X be random variable from Poisson distribution with average (λ= 8) i.e,  X~ Poisson (λ= 8)

Q: One half of the people in the United States own individual stocks. In a random sample of 12 people,…

A: Solution: Let X be the number of people in the United States own individual stocks. The probability…

Q: Roll two 8-sided fair dice independently. Let X and Y denote the numbers appeared on the upper faces…

A: There are turn & sided fair diceswhere x&y denotes the number appeared on upper face of die,…

Q: 14. A spinner is spun that has seven equal sections numbered 2, 5, 6, 8, 9, 12,15. What is the…

A: Here we have given the information, A spinner is spun that has seven equal sections numbered 2, 5,…

Q: fer to the Venn diagram below. How many elements are in the set AUB? U A C n(AUB) = 22 12 36 50 3 B…

A: Solution

Q: 1 1 Let A and B be independent events with P(A)= and P(B)= 5. Find P(An B) and P(AUB). 7 P(ANB)= ***

A: given data P(A)= 18P(B) = 15independent eventsfind P(A∩B)and P(A∪B)

Q: A certain state previously had license plates containing two letters followed by four digits but now…

A: It is given that in a certain state previously had license plates containing two letters followed by…

Q: An ordinary deck of cards contains 52 cards divided into four suits. The red suits are diamonds (+)…

A: It is given that there are totally 52 cards in an ordinary deck.

Q: 2. A survey found that 73% of Americans have a home phone, 83% have a cell phone, and 58% of people…

A: Let A be the event for  American home phone  B be the event for American cell phone Given  P(A)=73%,…

Q: A manufacturing firm claims that the batteries used in their electronic games will last an average…

A: The following information has been provided: The hypothesized population mean is μ=30. The sample…

Q: Consider the continuous random variable x, which has a uniform distribution over the interval from…

A:

Q: Suppose U = 2T - 1 where T is a geometric random variable with parameter p. What is Var(U)?

A:

Q: Draw a scatter diagram that might represent each relation. hours spent studying a week and GPA movie…

A: Here we have to identify the correct scatter diagram for the given statement

Q: Assume that a sample is used to estimate a population proportion p. Find the 80% confidence interval…

A:

Q: Select all of the regions included in the following expression.  Use the image below for reference.…

A: We have to draw diagram for the below A ∪ B'

Q: Participants in an archery game pay $10 for a chance to shoot an arrow at a target placed 70 yards…

A:

Q: The table shows relative frequencies for red-green color blindness in one doctor's practice. M…

A: The table shows the relative frequencies for red-green color blindness in one doctor’s practice.

Q: Suppose that X, Y, and Z are random variables with X Bin(7, 1/6), Y Geom(1/2), and Poisson(6).…

A: Given that X, Y and Z are random variables with X~Bin7,16Y~Geom12Z~Poisson6 X and Y are independent.…

Q: Q22. In a computer network a virus is spreading from machine to machine. Each week, the proportion…

A: Given that in a computer network a virus is spreading from machine to machine and 0.90 of the…

Q: A shelf in the Metro Department Store contains 100 colored ink cartridges for a popular ink-jet…

A: It is given that  Total cartridges = 100 Defective cartridges = 6

Q: C1. Let X be a continuous random variable with PDF f(x) = (2-x) for −1≤ x ≤ c and f(x) = 0…

A:

Q: A long-term study revealed that 94% of the men for whom a test was negative do not have cancer. If a…

A: long-term study revealed that 94% of the men for whom a test was negative do not have cancer. If a…

Q: A domestic manufacturer of watches purchases quartz crystals from a Swiss firm. The crystals are…

A:

Q: The probability of parents having a child with blonde hair is 1/5. If there are 8 children in the…

A:

Q: Probability of getting bonus points is 7/16. Find the odds in favor of getting bonus points?

A: We have given that,  Probability of getting bonus points = 7/16 Then,  We will find the odds in…

Q: (a) Let Z be a discrete random variable taking one of the four distributions covered in Chapter 10.…

A: Given that Let Z be a discrete random variable taking one of the four distributions covered in…

Q: 2. Suppose the weekly amount spent on computer repairs is normally distributed with a mean of $500…

A: Given that.   X~N( μ , ?)   μ=500     , ?=30   Z-score =( x - μ )/?

Q: 200 volunteers at a local kennel were surveyed. It was found that 132 women and 68 men volunteered.…

A: given data  132 women 68 men _______________ 200 total surveyed   of the 132 women 91 liked dogs and…

Q: The management of the Cambridge Company has projected the sales of its products (in millions of…

A: Given information: X=Sales 20 23 26 29 32 35 p=Probability     0.05     0.11     0.38     0.26…

Q: Suppose U~ Select one: Binomial(n, p) and n > 2. What is P(U > 1)? a. (1-p)"-¹[(1 − p) + np] b.…

A: Given that, U~Binomial (n,p)

Q: Make a scatterplot of the data below. The correlation for these data is 0.5. What is responsible for…

A: Given data: X Y 1 1 2 3 3 3 4 5 10 1 10 11 The correlation coefficient between X…

Q: The types of raw materials used to construct stone tools found at an archaeological site are shown…

A: The given sample of 1486 stone tools were obtained from a current excavation site.

Q: C2. For each of the following, (a) calculate the exact value using R; (b) get an approximate value…

A: Given information: The normal approximation to the binomial distribution can be used to obtain the…

Q: In a survey on consumer spending methods, the following results were obtained. Payment Method…

A:

Q: 5.34. In each case, compute the expectation of the random variable X. (a) The values of X are…

A:

Q: For the experiment described below, let x determine a random variable, and use your knowledge of…

A: Given information- We have given that a bag contains 4 green balls and 6 white balls. Total number…