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antoniya [11.8K]
3 years ago
7

a recipe for 4 servings of mashed potatoes calls for 1 1/3 cups of potato flakes and 1 cup of boiling water. if james wants to m

ake 6 servings instead of 4 how much of each ingredient will he need?
Mathematics
1 answer:
ElenaW [278]3 years ago
3 0
Potato Flakes: 2 cups
Boiling Water: 1 1/2 cups
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Answer:

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Step-by-step explanation:

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Null Hypothesis, H_0 : \mu \leq 250 W  

Alternate Hypothesis, H_A : \mu > 250 W    

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We are given that an appliance manufacturer claims to have developed a compact microwave oven that consumes a mean of no more than 250 W.

They take a sample of 20 microwave ovens and find that they consume a mean of 257.3 W.

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Alternate Hypothesis, H_A : \mu > 250 W    

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On the other hand, <u>alternate hypothesis sates that</u> the mean power consumption of microwave ovens is more than 250 W.

The test statistics that would be used here is <u>One-sample z test statistics</u> as we know about the population standard deviation;

                       T.S. =  \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }  ~ N(0,1)

Hence, this would be the appropriate hypotheses to determine if the manufacturer's claim appears reasonable.

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