SoccerHalo

11.12.2019 • 

Mathematics

It has been rumored that the color distribution of m& m’s is 30% brown, 20% yellow, 20% red, 10% orange, 10% blue, and 10% green. you suspect this rumor is incorrect and decide to count how many of each color are contained in a randomly chosen bag in order to perform a chi-square goodness-of-fit test at a 5% significance level. brown yellow red orange blue green total number observed 27 16 21 12 9 15 100 provided the assumptions of the test are satisfied, calculate the test statistic x^2.a) 4.15, 0 reject h b) 4.15, 0 fail to reject h c) 16.83, 0 reject h d) 16.83, 0 fail to reject h

Ответ:

stephany6523

27.12.2021

Mathematics

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Let the number of hours she works be x  

2x+15 15 more than twice the  

3x-15 15 less than 3 times the hours she worked  

2x+15=3x-15  

3x-2x= 30

x= 30  

the number of hours she worked is 30  

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