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Katena32 [7]
3 years ago
6

Copy and pasted from another post: This is a protest!!!!

Mathematics
2 answers:
VARVARA [1.3K]3 years ago
8 0

Answer:

YOU ARE RIGHT!!

Step-by-step explanation:

agasfer [191]3 years ago
8 0

Answer:

IM AMMM!!!! DUMB PEOPLE ANSWER FOR POINTS.. THAT NOT FAIR NOOOOO.. PROTEST YEAHHHH

Step-by-step explanation:

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Assume the probability is 1/2 that a child born at any time is a boy and births are independent. What is the probability of the
melisa1 [442]

There are only 23=823=8 possible ways to arrange the genders boy/girl, with repetition. Since the probability of boy and girl are equal, the probability of each of these arrangements are also equal. We can therefore count the number of possible "good" answers, and divide by 8.

There are 3 possible ways to have 1 boy, that being "first/second/third child is boy", so the probability of exactly 1 boy is indeed 3838.

Having at most 2 girls is the opposite of having three girls, so since there are only one way of having three girls, there must be 8−1=78−1=7 ways of having at most two girls, so the probability of at most two girls is indeed 78

8 0
2 years ago
Find the height of the pyramid.<br> Volume = 224 in.
valkas [14]
The correct answer is 42.
4 0
3 years ago
A study investigated the job satisfaction of teachers allowed to choose supplementary curriculum for their classes versus teache
Ber [7]

The Critical z-values are -1.96 and 1.96 option second is correct.

It is given that the teachers were allowed to choose supplementary curriculum for their classes versus teachers who were assigned all curricular resources for use in their classes.

It is required to find the critical z-values.

<h3>What is the critical value of Z?</h3>

It is defined as the area region enclosed by the standard normal curve or bell curve. It gives an idea about every variable, and what value of probability the variables acquire.

We are assuming the data given below:

x = 3.5

\mu =3.3

\sigma = 0.6

n = 40

We know the formula for the Z score:

\rm Z = \frac{x-\mu}{\frac{\sigma}{\sqrt{n} } }

\rm Z = \frac{3.5-3.3}{\frac{0.6}{\sqrt{40} } }

Z = 2.10

The area under the normal distribution curve:

P(Z= 2.10)  = 0.9821   ( from the z table)

We have null hypothesis H0: in the two groups, the level of job satisfaction is the same ie. with no difference.

H1: There is a significant difference in levels of job satisfaction.

The above hypothesis defined that the test is two-tailed which means there will be two rejection regions.

The critical z-values are:

-1.96 and 1.96  (from the critical value calculator at a 5% significance level with two-tailed)

Thus, the Critical z-values are -1.96 and 1.96 option second is correct.

Learn more about the critical value here:

brainly.com/question/13686040

4 0
2 years ago
I’ll<br> Give Brian list if it’s correct
MariettaO [177]

Answer:

yes

Step-by-step explanation:

5 0
3 years ago
Alguien lo puede resolver, pliss urgente
tangare [24]

Answer:

I can't understand the question sorry I don't speak spanish

Step-by-step explanation:

8 0
2 years ago
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