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3 years ago

BRAINLIEST TO THE BEST ANSWER !!!!

Mathematics

1 answer:

TiliK225 [7]3 years ago

4 0

Which equation am I looking at

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Im giving a hard one out so who can solve this

klemol [59]

If I had to guess, I would say that the answer were was (E)

7 0

3 years ago

What is the product of (–1.5)(0.8)

topjm [15]

The best answer would be -1.2 because when you multiply a negative by a positive, you always get a negative. Hope this helped!

8 0

4 years ago

Read 2 more answers

Find the unit rate 12 cupcakes in 3 boxes =

sveticcg [70]

Answer:

4 cupcakes per box

Step-by-step explanation:

If there is 12 cupcakes in 3 boxes, you can divide 12 by 3 and get 4 which is how many cupcakes are in one box.

~Good Luck~

3 0

3 years ago

Read 2 more answers

A manufacturer of coffee vending machines has designed a new, less expensive machine. The current machine is known to dispense (

cupoosta [38]

Answer:

$t=(15-1) [\frac{0.219}{0.2}]^2 =16.7864$

$p_v = 2*P(\chi^2_{14}>16.786)=0.5355$

And the 2 is because we are conducting a bilateral test.

$\alpha=0.05$ since the the $p_v >0.05$ we fail to reject the null hypothesis.

$\alpha=0.01$ since the the $p_v >0.01$ we fail to reject the null hypothesis.

Step-by-step explanation:

Data given

$\mu=7$ population mean (variable of interest)

$\sigma=0.2$ represent the population standard deviation

$s=0.219$ represent the sample deviation

n=15 represent the sample size

$\alpha=0.05,0.01$ represent the values for the significance level

Hypothesis test

On this case we want to check if the population standard deviation is equal or not to 0.2, so the system of hypothesis are:

H0: $\sigma = 0.2$

H1: $\sigma \neq 0.2$

In order to check the hypothesis we need to calculate the statistic given by the following formula:

$t=(n-1) [\frac{s}{\sigma_o}]^2$

This statistic have a Chi Square distribution distribution with n-1 degrees of freedom.

What is the value of your test statistic?

Now we have everything to replace into the formula for the statistic and we got:

$t=(15-1) [\frac{0.219}{0.2}]^2 =16.7864$

P value

We know the degrees of freedom of the distribution 14 on this case and we can find the p value like this:

$p_v = 2*P(\chi^2_{14}>16.786)=0.5355$

And the 2 is because we are conducting a bilateral test.

$\alpha=0.05$ since the the $p_v >0.05$ we fail to reject the null hypothesis.

$\alpha=0.01$ since the the $p_v >0.01$ we fail to reject the null hypothesis.

3 0

4 years ago

Help- this is already late-

aliina [53]

Answer:

it's answer is 2a + 6a - 21

Step-by-step explanation:

2a + 3 ( 2a - 7)

= 2a + 6a - 21

Hope it will help :)❤

3 0

3 years ago