Answer ASAP pls pls

Mathematics

1 answer:

LiRa [457]3 years ago

6 0

D be the correct answer

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a triangle has one leg of 32 inches and one leg of 18 inches. For the triangle to be a right triangle, which best represents the

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4 years ago

A company has developed a new type of light bulb, and wants to estimate its mean

BARSIC [14]

Answer:

628

Step-by-step explanation:

We have the standard deviation of the sample, so we use the t-distribution to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 12 - 1 = 11

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 11 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.95}{2} = 0.975$ . So we have T = 2.2

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The lower end of the interval is the sample mean subtracted by M. So it is 665 - 37 = 628 hours.

The answer is 628

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The first six composite numbers are 4, 6, 8, 9, 10, 12. Their average is their total divided by their number.

... 49/6 = 8 1/6

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"three times the difference between t and y

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