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3 years ago

I need help is it A B C or d

Mathematics

1 answer:

babunello [35]3 years ago

6 0

Answer is A
point slope form is y-y1=m(x-x1)

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A study on students drinking habits wants to determine the true average number of alcoholic drinks all UF male students have in

Butoxors [25]

Answer:

B. 97

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

How many students should be sampled to be within 1 drink of the population mean with 95% probability?

This is n when $M = 1$

We know from preliminary studies that the standard deviation is around 5, so $\sigma = 5$

$M = z*\frac{\sigma}{\sqrt{n}}$

$1 = 1.96*\frac{5}{\sqrt{n}}$

$\sqrt{n} = 5*1.96$

$(\sqrt{n})^{2} = (5*1.96)^{2}$

$n = 96.04$

We round up, so the correct answer is:

B. 97

3 0

3 years ago

PLEASE HELP ME PLEASE !

weeeeeb [17]

Answer:

the answer is 200000k yardd

6 0

3 years ago

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Helen [10]

Answer:

the answer to the second one is c im pretty sure

Step-by-step explanation:

3 0

3 years ago

Hi, can someone please answer this question? Thanks!!!

cricket20 [7]

Answer:

sorry im not so sure abut the answer

Step-by-step explanation:

.....

8 0

4 years ago

Help meeeeeeeeeeeeeee its mathhhh

Natali [406]

Answer:

Step-by-step explanation:

Its the only value that multiplies by four to get a greater value than added to nine

7 0

3 years ago

Read 2 more answers