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Stells [14]
2 years ago
12

The time, in minutes, it took each of 11 students to complete a puzzle was recorded and is shown in the following list

Mathematics
1 answer:
bija089 [108]2 years ago
4 0

Answer:

30, 31, 32, 35, and 38

Step-by-step explanation:

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The probability that a person in the United States has type B​+ blood is 12​%. Three unrelated people in the United States are s
V125BC [204]

Answer:

The probability that all three have type B​+ blood is 0.001728

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they have type B+ blood, or they do not. The probability of a person having type B+ blood is independent of any other person. 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.

The probability that a person in the United States has type B​+ blood is 12​%.

This means that p = 0.12

Three unrelated people in the United States are selected at random.

This means that n = 3

Find the probability that all three have type B​+ blood.

This is P(X = 3).

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

P(X = 3) = C_{3,3}.(0.12)^{3}.(0.88)^{0} = 0.001728

The probability that all three have type B​+ blood is 0.001728

4 0
2 years ago
Dion flips a coin 20 times and records if it comes up heads. If getting heads is a success, what is the probability of a success
Leviafan [203]
If the coin is fair, the probability of a success on each roll is 0.5.
8 0
2 years ago
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Evaluate. 58−(14)2=58-142= ________
nasty-shy [4]

For this case we have the following expression:

58- (14) ^ 2

The first step is to solve the quadratic term.

We have then:

58- (14) ^ 2 = 58-196

Then, the second step is to subtract both resulting numbers:

58- (14) ^ 2 = -138

We observe that the result obtained is a negative number.

Answer:

The result of the expression is given by:

58- (14) ^ 2 = -138

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2 years ago
An adventure sports club claims to take its hot air balloon to a height of 10,020 feet. The hot air balloon’s elevation is model
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C, six minutes, it might be D idk
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2 years ago
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The owners of an amusement park selected a random sample of 200 days and recorded the number of park patrons with annual passes
allochka39001 [22]
<h2>Answer with explanation:</h2><h2></h2>

The x% confidence interval interval interprets that we are x% confident that the true population mean falls in it.

Given : The owners of an amusement park computed a 90% confidence interval for the number of patrons with annual passes who visit the park daily.

Then, the correct interpretation of 90% confidence interval of (35, 51) will be that owners of an amusement park are 90% confident that the true population mean of the number of patrons with annual passes who visit the park daily lies in it.

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