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2 years ago

HELPPPPP!!!!!! ASAPPPPPP!!!!!! TIMEDDDD!!!!

Mathematics

2 answers:

yawa3891 [41]2 years ago

7 0

Answer:

<h2>The answer is b</h2>

Step-by-step explanation:

my reasonings are that what is six over twelve that is 1/2 and is 1/2 bigger than 12 beacuse 12 is half a number but c is correct also im a sixth-grader learning highschool math btw

padilas [110]2 years ago

6 0

Answer:

C(2,5)

Step-by-step explanation:

2(2)+3(5)>12

4+15>12

19>12

x-y>1

2-5>1

3>1

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Answer:

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Step-by-step explanation:

30% of 53 is 15.90

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2 years ago

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3 years ago

NEED HELP WITH A MATH QUESTION

adell [148]

For this case we have that the total of objects is given by:

Large blue objects, small blue objects, large red objects and small red objects.

In total we have: $17 + 3 + 8 + 12 = 4$ 0 objects.

If we want to find the probality of obtaining small and blue objects we have to:

$p = \frac {3} {40}$

ANswer:

$p = \frac {3} {40}$

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3 years ago

Read 2 more answers

Assume that we want to estimate the mean IQ score for the population of statistics professors. How many statistics professors mu

Kisachek [45]

Answer:

You should select at least 216 statistics professors.

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.

In this problem, we have that:

$M = 2, \sigma = 15$

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

$2 = 1.96*\frac{15}{\sqrt{n}}$

$2\sqrt{n} = 29.4$

$\sqrt{n} = 14.7$

$\sqrt{n}^{2} = (14.7)^{2}$

$n = 216$

You should select at least 216 statistics teachers.

8 0

3 years ago