Find the probability that the number x of correct answers is fewer than 4.

Q: measure of dispersion 7, 1

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A: given data,p=0.73n=100 the probability that the sampling distribution of sample porportions is less…

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A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

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A: Given that  Sample sizes n1=20      , n2=30        Sample means X̄1=22.9     , X̄2=20.1       s1…

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Q: Fast-Food Bills for Drive-Thru Customers A random sample of 50 cars in the drive-thru of a popular…

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Q: A hotel claims that 95% of its customers are very satisfied with its service. Complete parts a…

A: Solution-: Given: n=5, p=0.95 We want to find  (a) P(exactly 4 customers are very satisfied)=? (b)…

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Q: Because this is a serious claim, we will use a stricter cutoff value for unusual events. We will use…

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Q: in a random sample of 825 adults residing in the us, the proportion who reported being married was…

A: Data given  Se=standard error=0.017, n=sample size=825, p^=sample proportion=0.53

Q: he unemployment rate in a city is 14%. If 6 people from the city are sampled at random, find the…

A: When there are n trials and probability is same for all trials , we use binomial distribution .

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A: Given Information: The production process is functioning correctly 90% of the time. When production…

Q: Joan and Cindy are on the same bowling league.  The probability that Joan scores more than 150 is…

A: Given that: Probability that Joan scores more than 150 = 0.4 Probability that Cindy scores more than…

Q: scores of 40 students are listed below. Find P85.   30 35 43 44 47 48 54 55 56 57     59 62 63 65 66…

A: Given that  Arranging Observations in the ascending order, We get…

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A: Given information: Consider the given results of Binary logistic regression.

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Q: Households are randomly selected and partitioned into groups of four. For those groups, the random…

A: X P(X) 0 0.023 1 0.142 2 0.348 3 0.351 4 0.136 Total 1

Q: (1) In a hypothesis test of Ho a = 0.05, we conclude: a). Reject Ho c). Reject Ha = 18 vs Ha> 18, we…

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Q: The researcher found that the model’s effect size was very large where r = .325. Furthermore, r2 =…

A: The correlation coefficient is r = 0.325.

Q: You decide to flip a coin each day to decide which route to take to school: highway or back roads.…

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Q: 14.1 (w, f) If Y= X₁ + X₂ + X3, where X~ N(μ, C) and 1 [ | | -₁ = { 1 2 3 μl = find the mean and…

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A: Given that  H0 : p = 0.5 , H1 : p = 0.1

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Q: A random variable X has probability density function f (x;0) = - Ox Oe , x > 0 0, elsewhere It is…

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Q: Do you think regression should be used to answer sensitive problems, where a wrong decision incurs…

A: Regression :  Y= ax+b  Y= dependent variable x = independent variable   It shows relationship…

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Q: 3. State or specify the null and alternative hypotheses in the following (use complete statements,…

A: The answer is attached below.

Q: a. Statement of the Problem: Does Technical Support (X8) predict Satisfaction (X19)? b. Conceptual…

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Q: Determine the point estimate of the population​ proportion, the margin of error for the following…

A: Given,Lower bound=0.189Upper bound=0.391n=1000

Q: A healthcare research agency reported that 42% of people who had coronary bypass surgery in 2008…

A: Given that: Population proportion, p=0.42 Sample size, n=12

Q: You want to compare the tastiness and tanginess of limes grown with three amounts of a new…

A: Experiment is that whether tastiness and tanginess of limes grown differ with three amounts of…

Q: A random variable X has probability density function f(x;0) = Oe - Ox , x>0 0, elsewhere It is…

A: Given information: fx,θ=θe-θx, x>0 Hypotheses: H0:θ=1H1:θ=2 Level of significance is 0.1.

Q: a) Let Y₁, Y₂,..., Y, be random variable from a distribution given by f(y; B)= [y²e # 283 Show…

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Q: Questions 3a through 3d are based on a distribution of scores with x= 75 and the standard deviation…

A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…

Q: Research was conducted on the amount of training for 5K race and the time a contestant took to run…

A: a) Assume that x defines amount of training for 5K race (independent variable) and y defines the…

Q: Based on a​ survey, assume that 49​% of consumers are comfortable having drones deliver their…

A: Givenpercentage of consumers are comfortable having drones deliver theirpurchases = 49%No.of…

Q: Suppose Z follows the standard normal distribution. Use the calculator provided, or this table, to…

A: Given,P(c≤Z≤0.730)=0.7551

Q: Z -.5 0 2 What does the red area indicate? Op(2>Z>-.5) p(-.5>Z>2) p(2> Z) or p(Z > -.5) p(-2 > Z) or…

A: Given information- We have given the normal distribution graph. We have to determine what does the…

Q: It is a R question. Using your personal random sample of 1,000 observations, find: the average age…

A: #Generating 1000 random sample(considered as age)random<- sample(1:100, 1000, replace =…

Q: For the following payoff table, determine the best decision by using minimax regret and EOL.…

A: Given that: Payoff Table: Alternative State of Nature   Good  Fair Bad A 100 60 -50 B 80 50…

Q: Show that for n attributes A₁, A2, A3, ..., An (A₁ A₂ A3... A) ≥ (A₂) + (A₂) + (A3) + ... +…

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Q: (a) Above 59 (b) Below 59 (c) Above 47

A: given data

Q: Assuming a normal curve, find the lowest Z score a person could have while being in the following…

A: Using Normal curve Z = x-μσ We have given : ( a ) 10% P ( Z < z ) = 0.10 Using Excel =…

Q: IQ scores are known to be normally distributed with a mean of 100 and a standard deviation of 15.…

A: GivenMean(μ)=100standard deviation(σ)=15sample size(n)=100