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3 years ago

What is the expected number of tails when a fair coin is tossed 100 times?

Mathematics

2 answers:

BigorU [14]3 years ago

6 0

The answer to your question is 50

Karo-lina-s [1.5K]3 years ago

3 0

Answer:

50 times

Step-by-step explanation:

Assuming a fair coin (probability of heads = 1/2), the expected number of heads (in the sense of mathematical expectations) is 100*1/2 = 50.

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A player rolls a pair of standard dice. Find the probability P(sum is at least 3)

Nezavi [6.7K]

D because there are 6 sides to a dice and there are 3 options where the number is bigger than 3. Therefore 3/6 = 15/30

8 0

3 years ago

Write the equation of the line with a slope of 34 and a y-intercept of −7 in Slope-Intercept and Point-Slope Form.

jok3333 [9.3K]

This is what I would write

Y=34x+(-7) tho this is in y=Mx+b form so I hope this helps

8 0

2 years ago

Use the formula C(n, x)pxqn − x to determine the probability of the given event. (Round your answer to four decimal places.) The

miskamm [114]

Answer: 0.1334

Step-by-step explanation:

Given

There are seven trails with a probability of success is $p=\frac{1}{4}$

$\therefore q=1-p\\q=1-\frac{1}{4}\\q=\frac{3}{4}$

Using the binomial distribution, the Probability of exactly no success i.e. x=0 is given by

$\Rightarrow ^7C_0\cdot p^0 \cdot q^{7-0}\\\Rightarrow 1\times(\frac{1}{4})^0 \cdot (\frac{3}{4})^7\\\Rightarrow 1\times 1 \cdot (0.75)^7\\\Rightarrow 0.1334$

7 0

3 years ago

5. By using prime factorisation, determine if 324 and 588 are<br> perfect squares.

ad-work [718]

Step-by-step explanation:

first do prime factorization of 324= 2×2×3×3×3×3

= 2 square, 3 square,3 square

therefore 324 is a perfect square

Now,

prime factorization of 588=2×2×3×7×7

= 2 square,7 square ,3

therefore 588 is not a perfect square

3 0

2 years ago

Giving brainlist to whoever answers

just olya [345]

Answer:

False

Step-by-step explanation:

$V=bhw\\V=7.5*13*2\\V=195$

6 0

3 years ago