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Mamont248 [21]
3 years ago
11

What is the theoretical probability of rolling a 2

Mathematics
2 answers:
Ainat [17]3 years ago
3 0
10% you welcome :-) :-) :-) :-)
azamat3 years ago
3 0
1/6 if u r rolling a die
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Simplify 2452.5<br> Plz help me
Aleks04 [339]

Answer:

the answer will stay the same

8 0
2 years ago
You draw one card from a standard 52-card deck. In how many ways could the card be face card or a six?
Nady [450]
16/25 because there are 3 face cards which have 4 different suits and 4 different suits for the number 6
8 0
3 years ago
Suppose that scores on the mathematics part of a test for eighth-grade students follow a Normal distribution with standard devia
riadik2000 [5.3K]

Answer:

We need an SRS of scores of at least 153.

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{1-0.9}{2} = 0.05

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 1-0.05 = 0.95, so z = 1.645

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 large an SRS of scores must you choose?

This is at least n, in which n is found when M = 20, \sigma = 150. So

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

20 = 1.645*\frac{150}{\sqrt{n}}

20\sqrt{n} = 1.645*150

\sqrt{n} = \frac{1.645*150}{20}

\sqrt{n} = 12.3375

(\sqrt{n})^{2} = (12.3375)^{2}

n = 152.2

Rounding to the next whole number, 153

We need an SRS of scores of at least 153.

8 0
3 years ago
8 divided by 2 (2+2). 1 or 16
laiz [17]

Answer:

16

Step-by-step explanation:

8/2(2+2)  

Following the order of operations (PEMDAS), combine the terms in your parentheses:

8/2(4)

Remember that we follow the order of operations from left to right.

Divide 8 into 2:

4(4)

Multiply:

16

8 0
3 years ago
Dylan started with 30 baseball cards and gave away x cards. Sebastian started with 40 cards and gave away twice as many cards as
andre [41]

Answer:

he gave away 5 because if sebastian gave twice as many away and ended up with the same as dylan then it must be 5

4 0
2 years ago
Read 2 more answers
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