E[2A+ 3B + C – E + 2D] |

Q: 13. A supplier delivers an order for 30 electric toothbrushes to a store. By accident, three of the ...

A:

Q: A typist makes 3 errors per page on the average. What is the probability that she makes (i) no error...

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Q: TABLE A shows the number of success data obtained from a standard and new procedure of bio engineeri...

A: Given data : x1= 73 n1= 120 x2= 101 n2= 120 significance level, 0.05

Q: Suppose you have the population values of 50 and 80 and that their corresponding z-scores are -1 and...

A: We have given that  The population values of 50 and 80 and their corresponding z-scores -1 and 2 res...

Q: 5. Five hundred children participated in a field demonstration. Their heights averaged 110 cm with s...

A: 5)GivenMean(μ)=110standard deviation(σ)=6

Q: If a 8 card hand is dealt from an ordinary 52 card deck, in how many of those hands are all 8 cards ...

A:

Q: find the probability that the card shows a red card, queen or king.

A: Here use basic probability  = #favorable cards/# total cards

Q: What is the probability that a leap year selected at random will contain either 53 Thursdays or 53 F...

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Q: The entire senior class ata high school voted on the color for their class T-shirt. The results are ...

A: Given data,   P(Yellow)=?

Q: we want to guarantee that each of the three children gets at least 50 dollars. How many ways could w...

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Q: A senior inspector will inspect 10 rooms this week. (d) To have a fair representation, how many sea-...

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Q: The entire deck of 52 eards is dealt out to 4 players (the Ist player, 2ud player, 3rd player and 4t...

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Q: Let X1 and X2 have the joint pdf f(x1,x2) = 8x1x2, 0 < x1 < x2 < 1, zero elsewhere. Find the joint, ...

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Q: In how many ways can five couples be seated around a circular table if the couples insist of sitting...

A: Solution-: In how many ways can five couples be seated around a circular table if the couples insist...

Q: What percent of the original price do you end up paying?

A: A store has clearance items that have been marked down by 60%. They are having a sale, advertising a...

Q: Directions: Sketch the normal curve and find the area that corresponds to each of the following 1. t...

A: z be a standard normal curve.z~N(0,1)

Q: 7. How many planned to do at most ane of these activities?

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Q: The data shown below for the dependent variable, y, and the independent variable, x, have been colle...

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a...

Q: The polulation of a certain town, as obtained from the census data, is shown in the following table....

A: Population given according to years. First we have to calculate difference table. Than we can calcul...

Q: A single student is picked randomly by lottery for a cash assistance to be given due to COVID-19. a....

A: Mutually exclusive events are important concepts of probability.

Q: 38.) Given Phoebe doesn't trust her combination of data and regression model, which approach would g...

A: Hi, As you have posted multiple questions, we'll answer the first one as per our guidelines. We'll d...

Q: 13. When the occurrence of one event has no effect on the probability of the occurrence of another e...

A: 13. When the occurrence of one event has no effect on the probability of the occurrence of another e...

Q: 10. A board of directors consists of 6 men and five women. A four-member search committee is randoml...

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Q: 2% of the batteries produced by afactory are not satisfactory. In a sample of 12 batteries chosen at...

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Q: (a) Find EY and Var Y. (b) Find the joint distribution of X and Y. (c) Find the marginal distributio...

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Q: Determine if the events described in each of the given problems below are Mutually Exclusive Events ...

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Q: none of the rolls show 1 spot?

A: A die is rolled three times. on each die rolling each spot = 16  

Q: . either Oliver or Gemma will be elected. b. either Rey or Oliver will be elected. c. neither Rey no...

A: here define event  rey will be elected  = R oliver will be elected  = O gemma will be elected = G he...

Q: The weight of babies 3 months of age is normally distributed with a mean of 4.5 kilograms and a stan...

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Q: 19. If P(A) = 0.60, P(B) = 0.42, and P(A or B) = 0.88, then P(A and B) %3D %3D %3D %3D

A: Given P(A)=0.60P(B)=0.42P(A or B)=0.88

Q: 2) A researcher used a developed problem-solving test to randomly select 50 Grade 6 pupils wherein X...

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Q: The length of a movie file that is available for streaming is modeled using the normal distribution ...

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

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Q: E. One letter of the name “EXTRA" is selected at random. Fnd the probability that the letter selecte...

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Q: Example 1. A random variable has the following probability distribution Values of X 8 2 3 P(x) 3a 5a...

A: Solution is given:

Q: How many times would you expect to toss a balanced coin in order to obtain the first head?

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Q: 4. Do the followings with R: a. Create a plot of the pf of X. b. Create a plot of the cdf of X. c. D...

A: 4. Pdf of X: Here, X follows Binomial distribution with n=3 and p=0.4.  

Q: Which of the following instruments can be used to find the values of continuous random variable? Ple...

A: Option C is correct. Answer : weighing scale  Explanation : As weight is a continuous random variabl...

Q: in the blanks with the appropriate word or phrase to make meaningful cements. 1. The curve of a prob...

A: Need to fill the blanks with appropriate words.

Q: An investor owns shares in a stock whose present value is 20. She has decided that she must sell her...

A: A number of events will be independent if the probability of occurrence of any one of them is not af...

Q: What is the probability that out of 250 babies born, 130 or fewer will be boys? Assume that boys and...

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Q: Suppose that 50 sites on a patient might contain lesions. A biopsy selects 8 sites randomly (without...

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Q: For two cdfs F(x) and G(x), F(x)G(x) is a cdf.

A: Solution

Q: Marketing estimates that a new instrument for the analysis of soil samples will be very successful, ...

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Q: The events A and B are such that P(BIA)= 0.2, P(B|A') = 0.3, P(A|B)= 0.4 and P(A) = p a) Find the va...

A: the events A and B are such that P(B|A)=0.2,  P(B|A')=0.3,  P(A|B)=0.4 and  P(A)=p

Q: (TRUE / FALSE) For two random variables, X and Y , E(XY ) = E(X)E(Y ) if X and Y are uncorrelated.

A: Solution: The covariance between the random variable X and Y can be defined as  Cov(X,Y)= E(XY)- E(X...

Q: Suppose that the time required to complete a 1040R tax form is normal distributed with a mean of 90 ...

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Q: suppose that in a senior college class of 500 students it is found that 210 smoke, 258 drink alcohol...

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Q: Compute the mean of the following : 1. The following shows the grades in Mathematics of the 15 rando...

A: As per our guidelines  we are suppose to answer only one question. Given data is ,85, 89, 85, 81, 86...

Q: 1. Solve the problem. There are 12 chips numbered from 11 to 22 in a bag. A chip is drawn at random ...

A: