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melomori [17]
3 years ago
13

In expression 8x, what is 8 to x

Mathematics
1 answer:
Ksivusya [100]3 years ago
4 0
I'm not sure if this is the answer you are looking for, but the number before a variable is called a coefficient.  
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Plz answer correctly for brainlest, find the mean
salantis [7]

Answer:

103

Step-by-step explanation:

108+85+94+103+112+115+98+119+126+105+82+89=1236

1236/12=103

8 0
2 years ago
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How do u solve this problem “15 = 2 − 5?”
aev [14]

Answer:

-3 is the answer

7 0
3 years ago
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A recent study at UGA (March 5, 2008) suggests that students with cell phones may take more risks than students that do not have
Ira Lisetskai [31]

Answer:

(a) -2.8

b) (1) Reject H0: p = 0.50 in favor of HA: p < 0.50; there is sufficient evidence to conclude that less than half of all UGA female students who, if they had a cell phone, would be willing to walk somewhere after dark that they would normally not go.

Step-by-step explanation:

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.

H0: p = 0.50

This means that:

\mu = 0.5, \sigma = \sqrt{0.5*0.5} = 0.5

In a random sample of 305 UGA female students, 128 responded that, if they had a cell phone, they would be willing to walk somewhere after dark that they would normally not go.

This means that n = 305, X = \frac{128}{305} = 0.4197

a) Value of the test statistic:

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

z = \frac{0.4197 - 0.5}{\frac{0.5}{\sqrt{305}}}

z = -2.8

Pvalue:

We are testing the hypothesis that the proportion is less than 0.5, which means that the pvalue of the test is the pvalue of z = -2.81.

Looking at the z-table, z = -2.8 has a pvalue of 0.0026

(b) What is the correct conclusion for this hypothesis test at the 0.05 level of significance?

0.0026 < 0.05, which means that we reject the null hypothesis, that the proportion is 0.5, and accept the alternate hypothesis, that the proportion is less than 0.5, option (1).

6 0
3 years ago
chegg porter averages 21 points per basketball game with a standard deviation of 4.5 points. suppose porter's points per basketb
romanna [79]
Chegg porter averages 21 points per basketball
game with a standard deviation of 4.5 points.
suppose porter's points per basketball game
are normally distributed. let x
8 0
1 year ago
If there are five different breads, eight meats, five cheeses, and five special sauces, how many different sandwiches are possib
Papessa [141]

Answer:

There are 1000 different sandwiches possible.

Step-by-step explanation:

The number of breads available is, 5.

The number of meats available is, 8.

The number of cheese available is, 5.

The number of special sauces available is, 5.

Assuming that a person is allowed 1 selection of each category.

The possible number of sandwiches that can be made is:

=5\times8\times5\times5\\=1000

Thus, there are 1000 different sandwiches possible.

6 0
3 years ago
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