EXTRA CREDIT: Complete the truth table. Choices are on the next page. (3 points)<br> Hurry please

According to data from the American Medical Association, 10% of us are left handed. If three people are randomly selected, find

satela [25.4K]

Answer:

For each person, there are only two possible outcomes. Either they are left handed, or they are not. The probability of a person being left-handed is independent from other people. So we use the binomial probability distribution to solve this question.

0.1% probability that they are all left-handed.

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they are left handed, or they are not. The probability of a person being left-handed is independent from other people. So we use the binomial probability distribution 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.

10% of us are left handed.

This means that $p = 0.1$

If three people are randomly selected, find the probability that they are all left-handed.

This is P(X = 3) when n = 3. So

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

$P(X = 3) = C_{3,3}.(0.1)^{3}.(0.9)^{0} = 0.001$

0.1% probability that they are all left-handed.

3 0

3 years ago

A simple random sample of 32 men from a normally distributed population results in a standard deviation of 12.9 beats per minute

krok68 [10]

Answer:

Null Hypothesis, H0 = The pulse rates of men have a standard deviation equal to 10 beats per minute

Alternate Hypothesis, H1 = The pulse rates of men do not have a standard deviation equal to 10 beats per minute

Step-by-step explanation:

The null hypothesis is basically the problem statement i.e

Pulse rates of men have a standard deviation equal to 10 beats per minute

Hence, H0 = The pulse rates of men have a standard deviation equal to 10 beats per minute

The alternate hypothesis will contradict or negate the null hypothesis i.e

H1 = The pulse rates of men do not have a standard deviation equal to 10 beats per minute

4 0

3 years ago

What is the midpoint between:

Rainbow [258]

The answer is D) (2, -10)

7 0

3 years ago

The value of a rare painting has increased each year since it was found at a garage sale. The value of the painting is modeled b

erastova [34]

It representes the original cost
A=P(1+r)^t
P=present amount
t=time
r=rate
A=final amount

afer 5 years
t=5
A=799(1.03)^5
A=926.26 after 5 years

answer is last option:
<span>799 represents the total value of the painting; the painting will be worth $926 after 5 years

</span>

7 0

3 years ago

Read 2 more answers

A. 48 inches

scZoUnD [109]

Answer:

y

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

EXTRA CREDIT: Complete the truth table. Choices are on the next page. (3 points) Hurry please