31 An instructor gives an exam with ten questions. Students are allowed to choose any 5 to answer. How many different choices of five questions are there? O 2 O 30, 240 5 O 252

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Q: Iranian researchers studied factors affecting patients' likelihood of wearing orthodontic…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: I Consiter Hhe follwing pdf: PxY (xy). -2 di) Find Px and Px e) Find Pxir (xly) for every y. fo)…

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Q: Example 2 The following table represents no of Road accident in Bangalore city. Years: 1995 1996…

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A: It is given that Sample size n = 10 Sample variance s2 = 2.5 Population variance = 1.4

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A: Given information: Denote the population proportion as p. The confidence level is (1–α) = 90%. From…

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Q: It's known that diskettes produced by a company will be defective with probability 0.01…

A: It is given that the sample size n is 10 and p=0.01.

Q: A researcher wants to estimate the proportion of depressed individuals taking a new anti-depressant…

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Q: How many ways can the 7 flowers be chosen?

A: We have given that  Total number of flowers = 18

Q: What is the value of t*, the critical value of the t distribution for a sample of size 6, such that…

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Q: Suppose that X is a random variable * ? having the following p.d.f. , Find Var(x) { 2(1 – x) 0 < x <…

A: Given: f(x)=2(1-x) , 0&lt;x&lt;1 The formula to compute the mean is: V(x)=∫x2fx dx-∫xfx dx2

Q: A.2 According to Chemical Engineering Progress (November 1990), approximately 30% of all pipework…

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Q: : Let xab(5,0) Rind the best Critical region. ofSize a- 32 3. 4

A: Given  X~Bin(5,θ)

Q: Use the t-distribution to find a confidence interval for a difference in means - given the relevant…

A: There are two independent variables which follows normal distribution. We have to construct 99%…

Q: It has long been stated that the mean temperature of humans is 98.6°F. However, two researchers…

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Q: The Journal de Botanique reported that the mean height of Begonias grown while being treated with a…

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Q: Suppose the mean height of women age 20 years or older in a certain country is 62.7 inches. One…

A: We have given that The null and alternative hypothesis are H0 : µ = 62.7Ha : µ ≠ 62.7 The test…

Q: Solve for the following. Write your answer on the space provided. 1. If a card is drawn randomly…

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Q: A simplified model for the movement of the price of a stock supposes that on each day the stock's…

A: Let X be the random variable from binomial distribution with probability of moves up 1 unit (p) =…

Q: What is the probability that a data value in a normal distribution is between a z-score of -1.13 and…

A: Given that.   X~N( 0 , 1 )   μ=0  , ?=1 (for standard normal distribution)    Z-score =( x - μ )/?

Q: 8.20 Whole Foods is an all-natural grocery chain that has 50,000 square foot stores, up from the…

A: Given that,   Sample mean  is 846.2   Sample standard deviation s= 32.866   Sample size n= 10   95%…

Q: A bakery sells 10 types of pies: apple, cherry, blueberry, strawberry, peach, key lime, pumpkin,…

A: c) If at least 2 apple and 1 cherry pie are chosen already then 3 spots are already pre selected ,…

Q: I PxY (xy) Consiter the followihg pdf: 2 -2 3 ad Find the variance of random varibles x and Y, b.)…

A: "Since you have posted a question with multiple subparts, we will solve first 3 sub-parts for you.…

Q: What do you call the term if the sample space of a random experiment consists of a finite number of…

A: For the given statement select the correct choice

Q: Suppose the mean height of women age 20 years or older in a certain country is 62.7 inches. One…

A: The claim is that the mean heigh of women in the city differs from the national mean.

Q: The following table shows the price of commodities in the year 2000 and 2010. Commodity Price 2000…

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Q: On average, 3 traffic accidents per month occur at a certain intersection. What is the probability…

A: Solution-: Given :  λ=3     ( Mean =λ=3) We find the following probabilities (a) exactly 5 accidents…

Q: 11.) Choosing Classes. Kai Lu plans to enroll in four classes: sociology, chemistry, economics, and…

A: Kai Lu plans to enroll in four classes: Sociology , chemistry, economics and humanities.  There are…

Q: Compute (i) GFR, (ii) TFR, (iii) GRR from the given data. Female population in Thousands Age Number…

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Q: Use the normal approximation to the binomial to find the probability for n=10 p=0.5and X≥8. Round…

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Q: 3. The lower quartile is equal to O A. 2nd decile O B. 2nd quartile C. 25th percentile D. 50th…

A: The first quartile (or lower quartile), Q1, is defined as the value that has an f-value equal to…

Q: 1. Marcela and Lorenza agreed to go under one-month observation period. During the time, the fashion…

A: 1. The provided information is  Marcella takes 20 to 40 minutes to cut the basic cloth pattern. The…

Q: 2. Calculate the quartile deviation and its co-efficient from the following data, С. .: 10-15 15-20…

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Q: What do you call the term if the sample space of a random experiment consists of uncountable…

A: Discrete random variable set is the data in which value is countable and finite. Example {1,2,3,4,6}…

Q: (b) Use rules of variance to obtain an expression for the variance and standard deviation (standard…

A: Variance is the measure of dispersion. It is calculated by taking sum of square difference from the…

Q: (b) Compute the value of the test statistic. Round the answer to two decimal places. t =

A: We have given that  Sample mean = 35750 Population mean = 35000 Standard deviation = 7650Sample size…

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Q: A foreman for an injection-molding firm admits that on 52% of his shifts, he forgets to shut off the…

A: Let us define some events A : the forman forget to shut off the machine. B : the forman does not…

Q: how many different outfits can rhonda wear?

A: Here use combination

Q: Solve the following problems and show your complete solutions. Draw the normal curve then shade the…

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Q: Please use the accompanying Excel data set or accompanying Text file data set when completing the…

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Q: shows that 95% of submachine gun buyers purchase a box of bullets. What is the probability that a…

A: Here Given P(P)=Probability Personnel buy Pistol=0.85 P(G)=Probability that Personnel  buy  Gun=0.15…

Q: The total number of cars to be sold next week is described by the following probability distribution…

A: Given,V(X)=0.88Y=4-2X

Q: E. Direction: Consider the problem below. Draw a Venn diagram. Determine whether the event is…

A: Since we know that two events are said to be mutually exclusive if their interactions is zero For…

Q: 1. A researcher claims that the United Nationalist Alliance (UNA) will win the election. A total of…

A: Given that  Sample size n =4300 Favorable cases x =2200 Here we use  population proportion for…

Q: It has long been stated that the mean lémper temperature of humans is less than 98 6°F They measured…

A: From the given data state the hypotheses