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luda_lava [24]
3 years ago
10

Marco is 75 inches tall. There are 2.54 centimeters in 1 inch. What is Marco's height in centimeters?

Mathematics
2 answers:
skad [1K]3 years ago
5 0
Marco’s height in centimeters is 190.5
lyudmila [28]3 years ago
3 0

Answer:

190.5cm

Step-by-step explanation:

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Hey there!

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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.

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2 years ago
How many times does 10 go into 100
gayaneshka [121]

Answer:

The answer would be 10. Multiply 10 by 10 you'll get 100.

Step-by-step explanation:

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3 years ago
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Pls help me 10 points
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Answer: This teaches children to view women in a negative way. It shows strong, powerful women as someone evil and something to fear. On the other hand, it shows that more quiet women need a man to save them. It teaches children that women need men unless women act evil and cruel.

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