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docker41 [41]
3 years ago
6

One gallon of paint covers 14 square feet of wall space. Andrew is painting two walls. One is 10 feet long and 9 feet tall. The

other is 16 feet long and 18 feet tall. How many gallons of paint will he need
Mathematics
1 answer:
kow [346]3 years ago
3 0
He will need 5 gallons of paint
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Answer:

The degrees of freedom are given by:

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The significance level is \alpha=0.05 and then the critical value can be founded in th chi square table we need a quantile that accumulates 0.05 of the area in the right tail of the distribution and for this case is:

\chi^2_{\alpha}= 22.362

And if the chi square statistic is higher than the critical value we can reject the null hypothesis in favor of the alternative.

Step-by-step explanation:

We have the followign system of hypothesis:

Null hypothesis: \sigma^2 \leq 3.5

Alternative hypothesis: \sigma^2 >3.5

The degrees of freedom are given by:

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The significance level is \alpha=0.05 and then the critical value can be founded in th chi square table we need a quantile that accumulates 0.05 of the area in the right tail of the distribution and for this case is:

\chi^2_{\alpha}= 22.362

And if the chi square statistic is higher than the critical value we can reject the null hypothesis in favor of the alternative.

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