A field is to be surveyed for pesticide residues. Other fields treated in similar ways have been shown to have residues of 40–200 ug/g, with a standard deviation of about 30 ug/g. If an error level of + 3 ug/g is acceptable, how many samples are needed to be 95% confident that the requirement is met?

Q: QUESTION 2 The molecular weight of a particular polymer should fall between 167 and 479. Fourty…

A: We have given that  Mean = 271 Standard deviation = 65 The molecular weight is normally distributed.

Q: How do u find expected value

A: How do u find expected value

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Q: Q 1/ Given a random variable having the normal distribution with u=16 and o?-1.5625. Fine %3D the…

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Q: Q 4/ After collecting considerable data, the engineers decided to model the variation in shaft…

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Q: You toss a coin 200 times and get 36 tails. Complete parts ​(a)–​(c) below.   Part 1 ​(a) Determine…

A: Answer is below

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A: Given P=0.06 n=16 X=3

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A:

Q: the probability of a new employee in a​ fast-food chain still being with the company at the end of…

A: Given that  n=8 , p=0.7 , q=1-p=1-0.7=0.3 X~Binomial(n=8,p=0.7)

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A: Given,no.of mathematics books=4no.of English books=7no.of science books=5

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Q: 5. The probability distribution of discrete random variable X is given by k for x = 1, 2, 3 x +1 P(X…

A: In question, Given that X is random variable having pmf P(X =x) = k/(x+1)    x = 1, 2, 3 Then we'll…

Q: The probability density function of a random variable X is given by 1 f (x) = 300 x/300 for x 2 0…

A: We have to find the probability that X ≤ 600 based on given probability distribution of X.

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

A: We have given digit 1,6,8,9,3,7

Q: 9. If the moment generating function of X is 2 2 e' + M find the mean, variance and p.d.f. of X.

A:

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A: The following information has been given: Let A be the event that student is in the Dean's list. Let…

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A: here given , mrs putzman has a briefcase with a three digit combination lock. she can set the…

Q: 2. Suppose that X1,.., Xn are iid Geometric random variables with frequency func- .... tion f (x; 0)…

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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: A fair die is rolled five times. What is the probability of obtaining at least four 3​'s?

A:

Q: A quality control inspector is checking a sample of light bulbs. The table summarizes her results.…

A: The total number of light bulbs is 258.

Q: Which of the following statements is false? [0.2 1 [0.8 0 The matrix is a regular stochastic matrix.…

A: We have given that the statements about to the stochastic process. Here, need to find out the false…

Q: There are 20 members of the debate team, including 9 girls and 11 boys. Complete parts (a) through…

A: Given 20 members=9 girls and 11 boys  r!=r(r-1)(r-2)x...x3x2x1

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A: Probability is a chance of occurrence of any event.

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

A: Given information: Consider, the density function, The c value is calculated below:

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Q: (a) Find P(X < 1.2). (b) Find E(X).

A: We have given that a random variable X has pdf, f(x) = { 1/18(9-x2) ,          0 ≤ x ≤ 3…

Q: 1. Determine the permutations of the following. a. CELLULAR b. FLAMMABLE Ç. AVAILABLE

A: HERE AS PER GUIDELINES I HAVE CALCULATED 3 SUBPARTS  here use basic of permutation   Prn =  n!(n-r)!

Q: Assume that X is normally distributed with a mean of 3 and a standard deviation of 4. Determine the…

A: Given that mean =3 ,s.d =4

Q: According to a report done by S&J Power, the mean lifetime of the light bulbs it manufactures is 45…

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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: Two cards are selected in sequence from a (a) .1 standard deck. Find the probability that.. the…

A: HERE for standard deck of cards  total cards  = 52  no of suit  = 4 each suits contains 13 cards

Q: (6) Bruce is at a cafe watching people walk past while he works. He decides to model the number of…

A: Given that Average number of people pass him in a minute=5 Note: According to bartleby experts…

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Q: 7. Find the moment generating function, mean and variance when the p.d.f. of X is defined by: (a) x=…

A: Find MGF of the distribution

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Q: A survey indicated that 12% of residents of a country have a great deal of confidence in banks and…

A: Given,n=12p=0.12q=1-0.12=0.88A random variable X~Binomial(n=12 ,…

Q: If the two dice are rolled 135 times, predict about how many times a sum of 5 will be rolled.

A: In question, Given that the two dice are rolled 135 times. Then we'll find that approx in how many…

Q: What is the average of the following numbers? 2, 5, 8, 1 (A 4.5 3. 5,

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Q: An urn contains 2 one-dollar bills, 1 five-dollar bill and 1 ten-dollar bill. A player draws bills…

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Q: Which of the following vectors are not linearly independent?

A: We have given the two vector

Q: Aunt May recently learned about discrete probability. She performed a random experiment of rolling a…

A: Dear student, If you find this solution helpful please upvote ? it.

Q: A hypothesis will be used to test that a population mean equals 5 against the alternative that the…

A: