The probability of a man hitting a target is 1/3. How many times must he fire so that the probability of hitting the target at least once is more than 90%? 4. 3.

Q: Let X,Y, Z be random variables each having a mean µ and variance o². rurther, let Cov(X,Y) = 2,…

A: In question, Given that X, Y, Z are three random variables with mean mu and variance sigma^2. And,…

Q: 3. Malcolm estimates he has a 75% (put into a fraction), chance of making the hockey team and a 3 in…

A: here use given information and define events

Q: n+1 n+1 a + b Example 9. For what value of n, is the arithmetic mean of a and + b" b?

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Q: 1. Find the median of the following: 100-110 110-120 Weekly wages: 90–100 60-70 70-80 80-90 No. of…

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Q: The joint pmf of X and Y are given in the table below: Y X 4 2 15 1 15 15 15 15 2 3

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Q: use the probability of the union of two events, independent, or dependent events in solving the…

A: Hello! As you have posted 3 different questions, we are answering the first question. In case you…

Q: Domestic demand and supply for wheat are given by: Qd = 1000 - 20P Qs = 500 + 30P Suppose that…

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Q: Imagine a man on the grid below. A path is considered to be "valid' if it consists only "go right"…

A: a. From the given information, Given that a man can go either right or up. Observe that a man can go…

Q: use the probability of the union of two events, independent, or dependent events in solving the…

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Q: Find E(Y)

A: For the given table E(y ) =?

Q: Four different math books, th ree different economics books, and five different history books are to…

A: Given:Four different math books, three different economics books, and five different history books…

Q: Which of the following is not true about a distribution's shape? It the mean is much less than the…

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Q: (2) Determine the areas under the normal curve given the mean of the distribution µ = 80 and o =…

A: Given Information: Mean μ=80 Standard deviation σ=5.5

Q: You generate a scatter plot using Excel. You then have Excel plot the trend line and report the…

A: Solution-: Given: The regression equation is reported as Y^=-61.46*X+41.55 and r2=0.16 We find…

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Q: a) Let A and B be mutually exclusive events. Independent trials of the experiment are performed to…

A: There are two events A and B PA=paPB=pb a) Let A and B are mutually exclusive events. From the…

Q: Example 6. The quality control manager of a tyre company has sample of 100 tyres and has found the…

A: We have given that,  Sample mean (x̄) = 30214, Population standard deviation (σ) = 860, sample size…

Q: Tell whether there is a significant difference in the mean serum cholesterol of individual who…

A: Given information: No. of variables=5, i.e. Weight, Exercise, Systolic Pressure (before the…

Q: Suppose that events F and S are conditional independent events given D and -D respectively with…

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Q: A 6-sided die is rolled twice. What is the probability of showing a 5 on both rolls? Your answer is…

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Q: A set of numbers consists of four 4's, five 5 's, six 6's and nine 9's. What is the

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Q: Assume that a cyan dice and a pink dice are tossed at the same time seven times and their sum of the…

A: When the same random experiment is performed repetitively, it's called repeated trial. In repeated…

Q: (a) In testing a certain kind of truck tire over a rugged terrain, it is found out that 25% of the…

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Q: (2) Determine the areas under the normal curve given the mean of the distribution u = 80 and o =…

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Q: Example 21. B arranges to pay a debt of Rs. 9600 in 48 annual instalments which form an arithmetic…

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Q: 1. Find P (AN B).

A: Here use basic probability rule

Q: Example 48. Compute Q,, Q, and Q, of the following data: 13, 14, 7, 12, 17, 8, 10, 6, 15, 18, 21, 20

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Q: Find E(X + Y

A: here write marginal distribution of X and Y

Q: probability and non-probability: answer the following questions

A: Sampling is a way of selecting a subset of a population.

Q: The joint pmf of X and Y are given in the table below: Y X 4 2 2 15 15 3 15 15 15 123

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Q: 17. Е(X). . 18. Е(X + Y). 19. Е(X?).

A: For the given data Find E(X ) =? E(x+y ) =? E(X2 ) = ?

Q: Using your favorite statistics software package, you generate a scatter plot with a regression…

A: Given,y=-65.95x+49.28and r=-0.993

Q: Example 6. In a survey of 500 students in a college 180 were listed as drinking Tea, 275 as drinking…

A: Let T=students in a college were drinking TeaC=students in a college were drinking…

Q: To study the effect of temperature on yield in a chemical process, five batches were produced at…

A: Solution-: Let, x1=500C, x2=600C, x3=700C We prepare the ANOVA table Find,  Test statistic=?…

Q: Problem 7. Let A = {1, 2, 3, 4}, B = {1, 2, 3} and C = {2, 4}. Find all sets X %3D satisfying each…

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Q: (i) Only Palio (iv) Palio and Chevlot but not Matiz

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Q: The leading brand of powdered milk in the Philippines has a market share of 45%. A sample of 14…

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Q: Example 22. A piece of equipment cost a certain factory Rs. 6,00,000. If it depreciates in value,…

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Q: Example 5. If A, B and C are three sets and U is the universal set such that n(U) = 1000, n(A) =…

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Q: 2. Given a standard normal distribution, find the area under the curve that lies (a) to the right of…

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Q: Example 5. Find the coefficient of correlation between the heights of brothers and sisters from the…

A: It is given that X denotes the heights of brothers And Y denotes the heights of sisters. Required :…

Q: If you are to test a hypothesis about a given set of dependent or correlated sample, what…

A: To test the correlation we use t test. Test statistic t for testing correlation is given by, t=…

Q: The mean number of technical failure in ABC Solutions is 10 per batch. Find the probability that in…

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Q: The sisal composite tensile strength is normally distributed with a mean and standard deviation of…

A: A continuous random variable X follows Normal distribution with parameters μ and σ2 if its…

Q: Annual high temperatures in a certain location have been tracked for several years. Let X represent…

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Q: Suppose two dice (one red, one green) are rolled. Consider the following events. A: the red die…

A: Given that, two dice (one red, one green) are rolled. Consider the following events:- A: the red die…

Q: Suppose a special type of small data processing firm is so specialized that some have difficulty…

A: Property of probability distribution function (pdf) :  ∫yf(y) dy =  1

Q: Example 17. A money lender lends Rs. 1500 and charges Rs. 240 as overall interest. T'he amount was…

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Q: A mechanical device has a wear out time distributed normally with a mean of 1100 hours and a…

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Q: Based on the data shown below, calculate the regression line (each value to two decimal places) y =…

A: Given that    X Y X \cdot YX⋅Y X^2X2 Y^2Y2   5 20.5 102.5 25 420.25   6 21.85 131.1 36…