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JulsSmile [24]
2 years ago
6

How do you provide the value of k that makes each equation true?

Mathematics
1 answer:
Verdich [7]2 years ago
6 0

Answer:

sorry dont know

Step-by-step explanation:

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An office printer prints 25 photos in 12.5 minutes. A home printer prints 15 photos in 6 minutes. Which printer is faster?
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Office printer is faster
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Which expression has the same value as the one below?
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The first one is correct
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Mr. Gengel wants to make a shelf with boards that are 1 1/3 feet long. If he has an 18-foot board, how many pieces can he cut fr
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Answer:

13

Step-by-step explanation:

1 1/3 = 4/3

18 ÷ 4/3

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Using traditional methods it takes 92 hours to receive an advanced flying license. A new training technique using Computer Aided
DanielleElmas [232]

Answer:

The value of the test statistic is z = 1.39.

The p-value of the test is 0.0823 > 0.05, which means that there is not evidence at the 0.05 level that the technique lengthens the training time.

Step-by-step explanation:

Using traditional methods it takes 92 hours to receive an advanced flying license.

This means that at the null hypothesis, it is tested if the mean is of 92, that is:

H_0: \mu = 92

Test if there is evidence that the technique lengthens the training time

At the alternative hypothesis, it is tested if the mean is more than 92, that is:

H_1: \mu > 92

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

92 is tested at the null hypothesis:

This means that \mu = 92

A researcher used the technique on 70 students and observed that they had a mean of 93 hours. Assume the population variance is known to be 36.

This means that n = 70, X = 93, \sigma = \sqrt{36} = 6

Value of the test statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{93 - 92}{\frac{6}{\sqrt{70}}}

z = 1.39

The value of the test statistic is z = 1.39.

P-value of the test and decision:

The p-value of the test is the probability of finding a sample mean above 93, which is 1 subtracted by the p-value of z = 1.39.

Looking at the z-table, z = 1.39 has a p-value of 0.9177.

1 - 0.9177 = 0.0823.

The p-value of the test is 0.0823 > 0.05, which means that there is not evidence at the 0.05 level that the technique lengthens the training time.

8 0
3 years ago
Jhalen gave a presentation in health class about the importance of supportive sneakers. His presentation was 2/3 the length of L
cluponka [151]

Answer: Lenayah's presentation was 12 minutes long.

Step-by-step explanation:

  1. Set up a proportion. 2/3 = 8/x.
  2. Cross multiply. 2x = 24
  3. Divide both sides by 2. x =12
5 0
3 years ago
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