3 years ago

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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For the function f(x)=|x−7|−4, evaluate f(x+1).

GarryVolchara [31]

Answer:

$\displaystyle{f(x+1)=|x-6|-4}$

Step-by-step explanation:

To evaluate $\displaystyle{f(x+1)}$ , substitute $\displaystyle{x}$ to $\displaystyle{x+1}$ so we should have:

$\displaystyle{f(x+1) = |x+1-7|-4}$

Evaluate the expression and finally, we have:

$\displaystyle{f(x+1)=|x-6|-4}$

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2 years ago

What is W in this equation -w–11≤w–5

zhannawk [14.2K]

Step-by-step explanation:

-w - 11 < or = w - 5

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3 years ago

Assume the mean useful life of a particular light bulb is 2,000 hours and is normally distributed with a standard deviation of 3

Yuri [45]

The mean = 2,000
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M + 2 s = 2,000 + 2 * 300 = 2,000 + 600 = 2,600
Answer.
Useful life of light bulbs within 2 standard deviations of the mean is:
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3 years ago

Evaluate 10 + 8÷4 - 12

Kryger [21]

Answer:

Step-by-step explanation:

evaluate 10 + (8÷4) - 12

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2 years ago

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What is the opposite of the opposite of 8? A.8 B.1/8 C .-8 D -1/8

egoroff_w [7]