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Molodets [167]
3 years ago
12

The original triangle shown in the

Mathematics
1 answer:
nordsb [41]3 years ago
4 0

Answer:

i think (2,2)

Step-by-step explanation:

You might be interested in
Which statement is not true for a binomial distribution with n = 15 and p = 1/20 ? a) The standard deviation is 0.8441 b) The nu
malfutka [58]

Answer:

d) The highest probability occurs when x equals 0.7500

Step-by-step explanation:

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability, given by the following formula:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

In this problem, we have that:

n = 15, p = \frac{1}{20}

a) The standard deviation is 0.8441

\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{15*0.05*0.95} = 0.8441

This is correct

b) The number of trials is equal to 15

n is the number of trials and n = 15. So this option is correct.

c) The probability that x equals 1 is 0.3658

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 1) = C_{15,1}.(0.05)^{1}.(0.95)^{14} = 0.3658

This option is correct.

d) The highest probability occurs when x equals 0.7500

False. The number of sucesses is a discrete number, that is, 0, 1, 2,...,15. P(X = 0.75), for example, does not exist.

e) The mean equals 0.7500

E(X) = np = 15*0.05 = 0.75

This option is correct.

f) None of the above

d is false

3 0
3 years ago
Are these shapes similar or congruent?
aliya0001 [1]

Answer:

Congruent

Step-by-step explanation:

Hope this helps you!!

4 0
3 years ago
The slope of line XY is 1/8, and XY ⊥ AB
Ahat [919]
\bf \stackrel{\textit{perpendicular lines have \underline{negative reciprocal} slopes}}
{\stackrel{slope}{\cfrac{1}{8}}\qquad \qquad \qquad \stackrel{reciprocal}{\cfrac{8}{1}}\qquad \stackrel{negative~reciprocal}{-\cfrac{8}{1}}\implies -8}
5 0
3 years ago
Use the distributive property to simplify the expression 7 (8x+3). <br><br>7(8X+3=​
Lady_Fox [76]

Answer:

56x+21

Step-by-step explanation:

7times 8x is 56x

7 times 3 is 21

add them together and you get 56x+21

8 0
3 years ago
Jesus bought 3 pairs of jeans for $71.40. How much would he need to pay for 8 pairs of jeans?
grin007 [14]

Answer:

$190.4

Step-by-step explanation:

I divided the 71.40 dollars by three to find how much one pair would cost and then multiplied that by 8 to find how much 8 pairs would cost.

5 0
2 years ago
Read 2 more answers
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