12. (6p) A nurse at a local hospital is interested in estimating the birth weight of infants. What is the minimum sample size she must select if she desires to be 95% confident that the true mean is within 2 ounces of the sample mean? The population standard deviation of the birth weights is known to be 5 ounces. Assume the population is normally distributed. Round to the whole number.

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A: Solution: From the given information, a grid of size 6*6.

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A: Given that  Sample size =20  Population mean =220 Sample mean =244 Sample standard deviation =24.5…

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A: Given that A. When a random sample is to be taken from a population and a statistic is to be…

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A: a)Given that,n=64μ=50σ=16expectation,E(X)=μ                              =50standard…

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A: given data  12 $25 tickets 11 $5 tickets 14 $ 1 tickets 20 dummy tickets ____________________57…

Q: Health care workers who use latex gloves with glove powder on a daily basis are particularly…

A: Givensample size(n)=45Mean(x)=19.5standard deviation(s)=12.1

Q: SOLVE STEP BY STEP IN DIGITAL FORMAT 1. Show that the function F given by F(x) = { 1 is distribution…

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Q: Please do d ) and e)

A: Given that Standard deviation σ =15 We have to find 99% confidence interval for μ  d) If n = 80, x̄…

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A: Given A five-card poker hand dealt from a deck of 52 playing cards The number of ways in which we…

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A: given data, 7- red8-blue 4- yellow10- pink 29- total bean

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A: Givenn=26μ=30σ=6

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A: In leap year, there is 366 days  In non leap year, there is 365 days

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A: We have given that Number of red balls = 10 Number of blue balls = 8 Number of blue white balls = 7…

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A:

Q: If Z1, Z2, Z3 are independent and identically distributed, such that Zi--Geom(0.4) for i=1,2,3. What…

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A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

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A:

Q: Problem #1: Let X~ Unif[-2, 2], and Y = (X+ 1)². Problem #1(a): Problem #1(b): (a) Find fy() and…

A: If X~U(-2,2) then pdf of X,  f(x)= 1/(2-(-2)) = 1/4 ; -2<x<2

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A:

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A: Given that  Sample size n =38 Favorable cases x =22 Sample proportion p^=x/n  =22/38 =0.5789 NOTE:-…

Q: A bag of M&M's has 3 red, 2 green, 4 blue, and 6 yellow M&M's. Suppose you randomly select two M&M's…

A: Solution: Given information: red =3 green= 2 blue= 4 yellow =6 Total = 3+2+4+6= 15

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A: 1. a) Let X denotes the number of cases of bacterial conjunctivitis in a community of 10000 people.…

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A: Given that the asymptomatic positivity rate was 3.6% with a less aggressive variant and mask…

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Q: A college instructor gave identical tests to two randomly sampled groups of 50 students. One group…

A: From the provided information, n1=50x1=75.0s1=12.5n2=50x2=78.0s2=14.0

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A: Given,sample size(n)=4mean(μ)=215standard deviation(σ)=15

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A: Given : A = {1,2,4,5,6,10} xRy if and only if x|y

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A: Given that P(1,2,3) = P(2,1,1)=0.4, P(2,2,1)=P(2,3,2)=0.1 A) E(XYW)= P(XYW)×P(X,Y,W)…

Q: The Video Emporium rents DVDs and Blu-rays only. They surveyed their 1,168 rental receipts for the…

A: given data  n(dvd) = 832 n(blu rays)  = 692 n(tottal) = 1168

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A: Given:-           Suppose, ‘rolling a regular 6-sided die and a biased 4-sided die together is…

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A: Basic concepts of probability are used.

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A: * ANSWER :-    From the given information the calculation is given as below

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A:

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A: Given that, Z is discrete random variable. We know that,  E(z)= ∑Zi*p(zi) Where p(zi) is the…

Q: 4. Survival. Let X be a positive random variable with density function f and distribution function…

A:

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Q: The random variables X,Y have variance Var(X)=36 and Var(Y)=1 and their correlation is Cor(X,Y)=−34.…

A: Formula used Var ( X+Y) = Var(X)+Var(Y)+2Cov(X,Y)