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GarryVolchara [31]
3 years ago
12

What is the scale factor of 8, 10, 14 to 12, 15, 21?

Mathematics
1 answer:
MaRussiya [10]3 years ago
5 0

Answer:

The scale factor is 2/3

Step-by-step explanation:

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If i make $16 an hour and im offered a 5% increase .how much is that?
romanna [79]

Answer:

You would make $16.80 an hour.

Step-by-step explanation:

16 x 1.05 equals $16.80

5 0
2 years ago
When looking at the mean of a data set, what information do you get when looking at the mean?
levacccp [35]

Answer:

Step-by-step explanation:

You first have to add all of the numbers in the data set, than you divide by how many numbers are in the data set

5 0
2 years ago
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An article reported on the results of an experiment in which half of the individuals in a group of 60 postmenopausal overweight
slavikrds [6]

Answer:

Step-by-step explanation:

From the given information:

Let's first compute the null and alternative hypothesis

Null hypothesis:

\mathbf{H_o: \mu_1-\mu_2=1}

Alternative hypothesis:

H_a :\mu_1 -\mu_2 > 1

The number of samples is half in a group of 60

i.e

n_1=n_2 = 30

the sample mean for sample 1 \overline x_1 = 5.7

the standard deviation for sample 1 s_1 = 3.1

the sample mean for sample 2 \overline x_2 = 3.9

the standard  deviation for sample 2 s_2 = 2.7

degree of freedom  for this test can be computed by using the formula:

df = \dfrac{\begin {pmatrix} \dfrac{s_1^2}{n_1} + \dfrac{s^2_2}{n_2}   \end {pmatrix}^2  }  {\dfrac{ (\dfrac{s_1^2}{n_1}^2)}{ n_1-1}  + \dfrac{ (\dfrac{s_2^2}{n_2}^2)}{ n_2-1}  }

df = \dfrac{\begin {pmatrix} \dfrac{3.1^2}{30} + \dfrac{2.7^2}{30}   \end {pmatrix}^2  }  {\dfrac{ \begin {pmatrix} \dfrac{3.1^2}{30} \end {pmatrix}^2}{ 30-1}  + \dfrac{ \begin {pmatrix} \dfrac{2.7^2}{30} \end {pmatrix}^2}{ 30-1}  }}

df = 114.68

The test statistics can be computed as follows:

t = \dfrac{ \overline x_1 -\overline x_2- (\mu_1 -\mu_2)}{\sqrt{ \dfrac{s_1^2}{n_1} +\dfrac{s_2^2}{n_2} }}

t = \dfrac{ 5.7-3.9- (1)}{\sqrt{ \dfrac{3.1^2}{30} +\dfrac{2.7^2}{30} }}

t = 1.07

Using the level of significance of 0.1, the P-value for the test statistics at the df of 114.68 is:

P-value = 0.143

Decision rule: To reject the null hypothesis if the level of significance is greater than the p-value.

Conclusion: We fail to reject the null hypothesis because the p-value is greater than the level of significance at 0.1.

Thus, it appears that the true average weight loss for the vegan diet does not exceeds that for the control diet by more than 1 kg.

8 0
3 years ago
Which of the following is a correct interpretation of the expression -3 - 5−3−5minus, 3, minus, 5?
mariarad [96]

Answer:

-24

Step-by-step explanation:

7 0
3 years ago
True or False: The following relation is a function.
AysviL [449]

Answer:

A

Step-by-step explanation:

true

6 0
2 years ago
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