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maria [59]
3 years ago
14

Melani earned $18.00 per hour for the first 40 hours she worked last week. She worked an additional 5.5 hours at a rate of $27.0

0 an hour. How much money did she earnin total? Don't forget to use a dollar sign and proper decimal.
Mathematics
1 answer:
zubka84 [21]3 years ago
6 0

Answer:

868.5

Step-by-step explanation:

18 times 40 = 720

720 + 5 times 27 =135

135 + 27 divided by 5 = 13.5

720+135+13.5= 868.5

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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.

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3 years ago
The points (8,18) and (24,54) form a proportional relationship. Find the slope of the line through the
stiks02 [169]

Answer:

slope

m=\frac{9}{4}

best of luck!

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Emily is going to the movies this weekend with some friends. they have a total of $54 to spend. Emily wants a large popcorn that
timurjin [86]
Answer is 7

You have to do

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Round 1.6 to the nearest whole number
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The Answer is 2

Step-by-step explanation:

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Question 3 (1 point)
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Answer:

10

Step-by-step explanation:

on Ed

genuity it's right

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