A sales manager for a large department store believes that customer spending per visit with a sale is higher thancustomer spending without a sale, and would like to test that claim. A simple random sample of customer spending istaken from without a sale and with a sale. The results are shown below.MeanVarianceObservationsHypothesized Mean Differencedft StatP(T<=t) one-tailt Critical one-tailP(T<=t) two-tailt Critical two-tailConfidence LevelWithout sale with sale74.89478.1381951.47 1852.010220004190.8130.2081.6480.4171.96695%300Samples from without sale: nwithoutSamples from with sale: nwithPoint estimate for spending without sale: TwithoutPoint estimate for spending with sale: with-=Ex: 9---3-2Ex: 1.234Pt-1||=0Ex: 1.234123

Level of significance ɑ=0.01, df=419

Answered: A sales manager for a large department…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The incomes of math tutors in a tutoring center of a university are normally distributed with a mean of $1100 and a standard deviation of $150 what percentage of tutors earn less than $900 a month
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