What if we were interested in estimating the average weight of College football players? We know from past studies, that the population standard deviation is 45.6 pounds. How many students should we plan on sampling? We want to be within 4.2 pounds of the mean using a 95% confidence level. Round critical values to 2 places. n=

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A: Given,mean(μ)=5standard deviation(σ)=3

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A: The correct option is  Ver large datasets Untested assumption

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A: Empirical rule : 68-95-99.7  :  68% population lie within 1 standard deviations 95% population lie…

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A: Test Statistics follows certain probability distribution.  We can use the distribution of test…

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A: If the direction of alternative hypothesis is "≠", then it is called two-tailed test. If the…

Q: The IRS reported that 90% of individual tax returns were filed electronically in 2017. A random…

A: From the provided information, Sample size (n) = 225 From which 197 were filed electronically.…

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A: The data shows the calorie content of 12 frozen dinners.

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A: Sample size (n)=20  Sample mean =1012 hours  Population standard deviation(σ)=24 hours   Width =6…

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A: Formula for Predictive value negative: PVN=Result of Test Negative and Disease AbsentResult of Test…

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A:

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A: Given: Sample size(n)=80Averagex¯=6.2standard deviation(s)=0.1confidence interval(c)=0.95Lower limt…

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A: Given that mean is 10325 and standard deviation is 2880. X~N(10325,2880) Sample size is n= 60 then…

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A: Democrat (D) Republican (R) Total Male (M) 20 30 50 Female (F) 32 18 50 Total 52 48 100

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A: GIVEN DATA  standard normal curve  Z~N(0,1) P(0.65<z<1.1) = ?

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A: The expected value = ΣXi/n  here sample size is n=7  Then expected value = (13+12+11+16+15+18+14)/7…

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A: Given : C(x) =7x2 R(x) =x3+11x+11

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A: Data given 58,61,87,45,68,80,86,92,68,79

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A: From the provided information, Mean (µ) = 496 Standard deviation (σ) = 115 X~N (496, 115) Sample…

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A: Obtain the probability that this sample will have an average score between 23 and 26.   The…

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A: Given information: The percentage of donations are Type B blood is 20%. P(type B)=0.20 Let X be the…

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A: Given that: Sample mean, x¯=3 Sample standard deviation, s=1.1 Sample size, n=50 Level of…

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A: The given z-scores are z=-2.03,z=-0.27.

Q: An Izod impact test was performed on 20 specimens of PVC pipe. The sample mean is x = 1.22 and the…

A: Given that  X bar = 1.22 , n= 20, s= 0.30

Q: Suppose

A:

Q: Find the z-score such that: (a) The area under the standard normal curve to its left is 0.667 Z= (b)…

A: given data we have to find z score that satisfy following area. standard nirmal curveZ~N(0,1)

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A: The answer is attached below.

Q: Scores for a common standardized college aptitude test are normally distributed with a mean of 510…

A: GivenMean(μ)=510standard deviation(σ)=96

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A:

Q: 3. Develop the least squares estimated regression equation.                       State your answer…

A: S&P 500 Coca-Cola -7 -5 4 0 3 3 -10 -7 -4 -6 1 14 -3 -2 -4 -7 -5 -2 -1 -2…

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A: As asked by you, I have answered question 5.6 a-c. Please find the explanation below. Thank you.

Q: K Diameters of Golf Balls 1.35 1.62 1.32 1.52 1.59 1.65 1.48 1.65 1.49 1.62 1.48 1.65 1.67 1.48 1.61…

A: Data given 1.35,1.62,1.32,1.52,1.59,1.65,1.48,1.65,1.49,1.62,1.48,1.65,1.67,1.48,1.61

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A: The question is about counting theory Given : Total no. of digits = 5 3 digits nos. can be formed…

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A: GivenMean(μ)=8.06standard deviation(σ)=1.52

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A:

Q: FOr a single sample t-test what is the number of the t-test equation or the comparision/diffrence…

A: Formula for test statistic t=x-μsn

Q: The weights of a certain brand of candies are normally distributed with a mean weight of 0.8589 g…

A: Here, μ=0.8589,  σ=0.0513, and n=451

Q: Questions 19-23 are questions pertaining to the following 2 x 2 table for an infectious disease and…

A: Prevalence: = no.of self reported patients/Total patients

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A: For the given data Perform chi square test

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