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4 years ago

Some researchers claim there is an association between

Mathematics

1 answer:

Ann [662]4 years ago

6 0

Btween what fam 69420

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1. A luge race is very dangerous, and a crash can cause serious injuries. The league requires anyone who has a crash to have a t

antiseptic1488 [7]

Answer:

0.7061 = 70.61% probability she will have her first crash within the first 30 races she runs this season

Step-by-step explanation:

For each race, there are only two possible outcomes. Either the person has a crash, or the person does not. The probability of having a crash during a race is independent of whether there was a crash in any other race. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

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

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.

A certain performer has an independent .04 probability of a crash in each race.

This means that $p = 0.04$

a) What is the probability she will have her first crash within the first 30 races she runs this season

This is:

$P(X \geq 1) = 1 - P(X = 0)$

When $n = 30$

We have that:

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

$P(X = 0) = C_{30,0}.(0.04)^{0}.(0.96)^{30} = 0.2939$

$P(X \geq 1) = 1 - P(X = 0) = 1 - 0.2939 = 0.7061$

0.7061 = 70.61% probability she will have her first crash within the first 30 races she runs this season

7 0

3 years ago

If a point c is inside then what is the answer?

Liono4ka [1.6K]

I think it would be C

8 0

3 years ago

Read 2 more answers

(a) A square has a perimeter of 32 ft. What is the length of each side?

vitfil [10]

A. 32/4=8
B. Square root of 9 = 3

7 0

3 years ago

If a rectangular area is rotated in a uniform electric field from the position where the maximum electric flux goes through it t

Greeley [361]

With a uniform electric field, flux go along parallel paths, then flux is therefore proportional to the cosine of the angle rotated.
0 degree rotation => cos(0)=1 => 100% of flux.
60 degrees rotation => cos(60) => 0.5 => how many % of flux?

7 0

3 years ago

Six more than the product of 10 and craig’s score

maw [93]

Answer:

6+10x

Step-by-step explanation:

if x=craigs score that becomes 6+10 times x or 6+10x

4 0

3 years ago