It is suggested that the distribution of the IQs of all professors is normally distributed with mean of 140 and standard deviation of 5. What is the probability that the sample of size 81 professors has a mean that differs by more than 2 from the population mean?

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Q: EXAMPLE :- How many 3 digits number can be formed using digits 1,6,8,9,3,7 without repeating any…

A: Given digits is 1,6,8,9,3,7Total no.of digits =6

Q: The probability of having 7 girls is_

A: Here given , family contains 7 children  n = 7

Q: 8 Maya lists all the possible outcomes of spinning the spinners below one time each. Pink Blue Green…

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Q: (c) Compute P(X = 2 or X = 3)

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Q: a) What is the expected value for the woman buying the insurance? Round your answer to the nearest…

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Q: Question 1: The cumulative distribution function of a continuous random variable X is givem (0,x <-2…

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Q: 1. Calculate the t-test result for the following unpaired set of data: • Group One: 172, 175, 50,…

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A: when two dice are thrown  total no. of outcomes = 6*6 = 36 sample space : {(1,1) (1,2) (1,3) (1,4)…

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Q: 1. Complete the table Po P- n value a. 100 40/100 8% b. 248 51/248 10% C. 312 100/31 12% 2 d. 486…

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Q: EXAMPLE :- How many 3 digits number can be formed using digits 1,6,8,9,3,7 without repeating any…

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Q: EXAMPLE :- How many 3 digits number can be formed using digits 1,6,8,9,3,7 without repeating any…

A: Given digits is 1,6,8,9,3,7No. of digits = 6No.of digits to be formed = 3

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A: Given that  n=8 , p=0.4 q=1-p=1-0.4=0.6 X~Binomial(n=8,p=0.4)

Q: Z is a random variable subjecting to a standard normal distribution. Find a value of c such that…

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Q: ملاحضة / / يجب كتابة النتيجه فقط 1. How many odd numbers with at most two digit can be formed using…

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Q: Given a normally distributed population with a mean of 100 and variance 100, find f) P(90 sx S 115)…

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Q: If you play this game, what is your expected net winning?

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Q: a) Suppose one 1st year student is chosen at random. Find the probability that the student earned a…

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Q: a. How many athletes are using PEDS? b. How many of these received a positive test result? c. If an…

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Q: The probabliity density function for the random variable X is given by x2. f(x) = {(25 - x2), 0, 0<x…

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Q: (a) the constant b in terms of a. (b) P(X>a). (c) P(a < X < 3a). (d) X, X2 and o² .

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Q: Consider the data set shown. The mean X value is 6 and the mean Y value is 5. X Y 8. 1 8. 4 7 What…

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Q: Q 2/ In a certain city, the number of power outages per month is a random variable, having a…

A: It is given that n=22 and p=0.7.