StartA company that develops an automated customer service model is interested in knowing whether two versionVersion A and Version B, will get different ratings from customers. Participants in a focus group are taken throsamples from both versions, then take a survey to rate each version. A summary of the data obtained from thstudy is given below Assume ratings from the different surveys generally have the same standard deviationMeanObservationsPearson CorelationHypothesized Mean DifferencedftStatVersion A Version B33.13315-0.3250.0014नाथे2628.67150.088p= Ex: 1.234P(T<3t) one tailt Critical oneMailP(T<-t) two-tallI Critical two-tailConfidence Levelना.3450.176-1.76195%t3Ex 1.234t%3Dn=Ex:9Degrees of freedom dfPoint estimate for Version A a Ex1234Point estimate for Version B z2=

The given output is, From the output, The value of sample size is,n = 15 The degree of freedom is,…

Answered: A company that develops an automated…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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A coin-operated coffee machine made by BIG Corporation was designed to discharge a mean of eight ounces of coffee per cup. If it dispenses more than that on average, the corporation may lose money, and if it dispenses less, the customers may complain. BIG Corporation would like to estimate the mean amount of coffee, μ, dispensed per cup by this machine. BIG will choose a random sample of cup amounts dispensed by this machine and use this sample to estimate μ. Assuming that the standard deviation of cup amounts dispensed by this machine is 0.42 ounces, what is the minimum sample size needed in order for BIG to be 99% confident that its estimate is within 0.08 ounces of μ? Carry your intermediate computations to at least three decimal places. Write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements).
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