In a review class of 80 students, 70 passed the board exam. If a student is selected at random, what is the probability that he passed?

Q: Suppose you have 3 jars with the following contents- Jar 1 has 1 white ball and 1 black ball, Jar 2…

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Q: In a management trainee program, 80% of the trainees are female, while 20% are male. Ninety percent…

A: Solution-: Given: P(Female)=0.80 (Or 80%)           P(Male) =0.20 (Or 20%)         P(Female/ Attend…

Q: A project has estimated optimistic (a), most likely (m) and pessimistic (b) times for activity D as…

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Q: A government agency has 3,000 employees. The employees were asked whether they preferred a four-day…

A: For the given data Find all the given probabilities

Q: xteen percent of U.S. residents are in their twenties. Consider a group of six U.S. residents…

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Q: Given Y = b0 + b1X. If b1 = -10, for every one-unit increase in X, what is the estimated impact on…

A: Solution-: (a) Given Y = b0 + b1X. If b1 = -10, for every one-unit increase in X, what is the…

Q: roll a fair 7-sided die 5 times, what is the probability that none of the rolls are 3's or 4's? If…

A: Given that a fair 7-sided die rolled 5 times. When tossing 7-sided die, the probability of getting…

Q: (a) State the null hypothesis H, and the alternative hypothesis H . H, :0 H :0 (b) Determine the…

A: For the given data Perform paired t test

Q: You are rolling two dice, what are your chances of winning If the two dice should have an equal…

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Q: Assume that a sample is used to estimate a population mean p. Find the margin of error M.E. that…

A: Givensample size(n)=10Mean(x)=61.2standard deviation(s)=20.8Confidence level=90%

Q: The gestation period of humans follows a normal distribution with a mean of 266 days and a standard…

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Q: 10.1. Expected Values of Sums of Random Variables (1) Let the joint probability density function of…

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Q: .A sample of seven college wrestlers had an average weight of 267 pounds with a sample standard…

A: It is given that sample mean is 267 and the sample standard deviation is 10.

Q: After examining their clients' records, Crashorama Auto Insurance calculated the probabilities in…

A: From the provided information,   Miles/Year < 10000 10000 ≤ Miles/Year < 20000 20000…

Q: 10. If X~B(10,0.3) then calculate: a. P(X = 2) b. P(X = 0) С. P(X > 6)

A: Binomial distribution is used when the distribution has two possible outcomes. It explains the…

Q: Persistence diagrams show the behaviour of drivers over the last few years across different…

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Q: Q14. The following spinner has outcomes: 2, 3 and 5 Pr (3) = Pr (5) ; Pr (2) = 1/4. 3. What is the…

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Q: state populations and hypotheses (2) conduct a Factorial ANOVA in SPSS (3) report all results…

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Q: Determine each of the following areas and show these graphically. Use probability notation in your…

A: Solution

Q: In roulette, a wheel is divided up into slots of equal area. each slot is labeled with one of the…

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Q: Jack's drive from his home to local college campus is distributed as continuous uniform between 20…

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Q: student correctly answers a question, what is the probability that the student really knew the…

A: here define events  student knows the answer to the question  = Q student guess the answer  = Q'…

Q: A binomial random variable X reveals p=100 and o=20. Calculate P{X=101}.

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Q: What type of correlation exists between a person's age and the amount of sleep? O a. high positive O…

A: From  the given data Select the correct choice

Q: An airline is trying two new boarding procedures, Option 1 and Option 2, to load passengers onto…

A: There are two independent samples which are Option 1 and Option 2. We have to test whether the mean…

Q: You wish to test the following claim (H1) at a significance level of a = problem, Hd 0.01. For the…

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Q: Six hundred employees cast their preference ballots for the new president of their company. The…

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Q: You are dealt one card from a 52-card deck. Find the probability that you are dealt a club or a…

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Q: Time (t hours) 2 <t < 3 3 <t < 3.5 3.5 <t < 4 Frequency 1200 4 <t< 4.5 800 4.5 <t < 6 1440 3. 5 Time…

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Q: Sponsors of a local charity decided to attract wealthy patrons to its $500-a-plate dinner by…

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Q: 9. Describe the key similarity between a binomial distribution and a hypergeometric distribution. a.…

A: We have to choose the key similarity between binomial distribution and hypergeometric distribution.…

Q: Q4) A factory manufactures cups. The manager knows from past experience that 5% of the cups produced…

A: Let X be the random variable from binomial distribution with probability (p) = 5% = 0.05 and sample…

Q: Two students are randomly selected from a statistics class, and it is observed whether or not they…

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Q: Example 16.13) A person while calculating correlation coefficient between two variables X and Y ob-…

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Q: The probability that a patient recovers from a stomach disease is 0.7. Suppose 20 people are known…

A: Here's, by using binomial distribution, probability of success is 0.70 and number of trials are 20.…

Q: Do lizards play a role in spreading plant seeds? Some research carried out in a country would…

A: Solution: From the given information, the number of treatments is 4. The sample size for each…

Q: A statistics professor receives an average of five e-mail messages per day from students. Assume the…

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Q: Carlson Jewelers permits the return of their diamond wedding rings, provided the return occurs…

A: Given that 10% of the diamond wedding rings are returned. Five different customers buy a wedding…

Q: What is the probability that exactly 12 recover?   (b) What is the probability that at least 10…

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Q: Assume an hypothetical consumer faced by the following utility function; U=X^2Y ( squared times y).…

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Q: What is the probability that she will get both projects?

A: Tammy is a general contractor and has submitted two bids for two projects (A and B). The probability…

Q: 2. Let X be a continuous random variable with density f(x) = 3(1- x)²,0 <x < 1. Determine the PDF…

A: Solution

Q: 1. Suppose that Bob is ambiguity averse, and evaluates expected utility for a set of prior…

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Q: 18. A Mexican tfood truck knows from past data that 60% of customers order the beef taco instead of…

A: Given,n=10p=0.6q=1-0.6=0.4A random variable X~Binomial(n=10 , p=0.6)P(X=x)=Cx0.6x0.410-x  ;…

Q: A pair of dice is tossed. If one die shows a 5, what is the probability that the other due shows a 5…

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Q: 1.) Three dice are rolled. Find the probability of getting three 2s if it is known that the sum of…

A: Here AS PER GUIDELINES I HAVE CALCULATED FIRST QUESTION PLZ REPOST FOR REMAINING  1)  HERE 3 Dice…

Q: 10.1. Expected Values of Sums of Random Variables (1) Let the joint probability density function of…

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Q: (a) Find the probability that the client drives less than 10,000 miles/year and has an accident. (b)…

A: The data is given by   &lt; 10000 10000 - 20000 20000 &lt; Total Accident 0.06 0.10 0.29 0.45…

Q: Assume that you are drawing two balls without replacement from an urn that contains 10 green balls,…

A: for the given data find the probabibility

Q: Example 9.26 If z is normally distributed with mean 0 and variance 1, find: (i) P(z 2 - 1.64) (ii)…

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