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hoa [83]
3 years ago
6

find the critical t value for each of the following confidence intervals: 90% confidence interval when n = 20

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
6 0
The answer is n=40 and that’s because bxndndns
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<em><u>Solution:</u></em>

<em><u>The area of trapezoid is given as:</u></em>

A = \frac{a+b}{2} \times h

Where , "a" and "b" is the length of base and "h" is the height

The length of one base of a trapezoid is 19 less than five times the length of the other base

a = 19 less than fives times b

a = 5b - 19

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h = 18 feet

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<em><u>Substitute the values in above formula</u></em>

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5 0
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