Jolie Hannah and Lourdes known for their slogan a little we will not ruin your brain but a little stat will put you on a crack work happy that stats were finally over of course they would miss their awesome Professor I am sure and decided to solve the following for the missing values. A.iron it's like the stats group a ways and measures agency needed to find how many quarters to sample to be within 0.025 g of the mean weight that can be accepted by vending machines if they had an o equal to 0.68 g and the confidence level of 99% find the number of quarters that they need to sample. Bthe nodos digital alarm clocks company was trying to find the proportion of its customers who would who would buy their brand of alarm clocks again if they wanted to be within 5%age points of the population proportion how many former customers would they need to survey given a level of significance of 10%, p- h a t is unknown

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Author:Amos Gilat
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Jolie Hannah and Lourdes known for their slogan a little we will not ruin your brain but a little stat will put you on a crack work happy that stats were finally over of course they would miss their awesome Professor I am sure and decided to solve the following for the missing values.

A.iron it's like the stats group a ways and measures agency needed to find how many quarters to sample to be within 0.025 g of the mean weight that can be accepted by vending machines if they had an o equal to 0.68 g and the confidence level of 99% find the number of quarters that they need to sample.

Bthe nodos digital alarm clocks company was trying to find the proportion of its customers who would who would buy their brand of alarm clocks again if they wanted to be within 5%age points of the population proportion how many former customers would they need to survey given a level of significance of 10%, p- h a t is unknown

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Step 1

a) The error of margin E=0.025, σ=0.68 and the confidence of level =0.99

The sample size is,

n=(σ*Zα/2E)2       =(0.68*2.580.025)2        =4924.671

 The number of quarters that they need to sample is 4925

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