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mixer [17]
3 years ago
7

Help i need this answer by tomorrow

Mathematics
1 answer:
Reika [66]3 years ago
8 0
I think that it could be B or A
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29<br> 6. Calculate the hourly rate of a person who works 40<br> hours for a wage of $387.20.
Vikentia [17]

Answer:

$ 9.68

Step-by-step explanation:

a person who earns $387.20. in 40 earns will earn $9.68 in one hour

4 0
3 years ago
Read 2 more answers
A professor wishes to discover if seniors skip more classes than freshmen. Suppose he knows that freshmen skip 2% of their class
KIM [24]

Answer:

We conclude that seniors skip more than 2% of their classes at 0.01 level of significance.

Step-by-step explanation:

We are given that a professor wishes to discover if seniors skip more classes than freshmen. Suppose he knows that freshmen skip 2% of their classes.

He randomly samples a group of seniors and out of 2521 classes, the group skipped 77.

<u><em /></u>

<u><em>Let p = percentage of seniors who skip their classes.</em></u>

So, Null Hypothesis, H_0 : p \leq 2%   {means that seniors skip less than or equal to 2% of their classes}

Alternate Hypothesis, H_A : p > 2%   {means that seniors skip more than 2% of their classes}

The test statistics that will be used here is <u>One-sample z proportion</u> <u>statistics</u>;

                                   T.S.  = \frac{\hat p-p}{{\sqrt{\frac{\hat p(1-\hat p)}{n} } } } }  ~ N(0,1)

where, \hat p = sample proportion of seniors who skipped their classes = \frac{77}{2521}

           n = sample of classes = 2521

So, <u><em>test statistics</em></u>  =  \frac{\frac{77}{2521} -0.02}{{\sqrt{\frac{\frac{77}{2521}(1-\frac{77}{2521})}{2521} } } } }

                               =  3.08

The value of the test statistics is 3.08.

Now at 0.01 significance level, <u>the z table gives critical value of 2.3263 for right-tailed test</u>. Since our test statistics is more than the critical value of z as 2.3263 < 3.08, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which <u>we reject our null hypothesis</u>.

Therefore, we conclude that seniors skip more than 2% of their classes.

6 0
3 years ago
If the cost of carpeting a floor is $2.50 per square foot how much will it cost
Novosadov [1.4K]

Answer:

How many feet of the floor are you carpeting that is the real question

Step-by-step explanation:

It depends on how many feet you are putting the carpet on.

3 0
2 years ago
Formula of quadratic function and their graph​
Mama L [17]

Answer:

-b +/- √b^2-4ac

_____________

2a

7 0
2 years ago
I need help with this
pochemuha

Answer:

A(x) =  \frac{ 4x + 800 }{x}

Step-by-step explanation:

C(x) = 4x + 800.... (given)

\because \: A(x) =  \frac{C(x) }{x}

\therefore \: A(x) =  \frac{ 4x + 800 }{x}

7 0
3 years ago
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