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tino4ka555 [31]
3 years ago
9

Which one is I need help on this and how ?

Mathematics
1 answer:
Olenka [21]3 years ago
5 0
So it’s going to be d
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A cafeteria serves 340 cups of milk each day. How many pints of milk does the cafeteria serve each day?
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170 pints

Step-by-step explanation:

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At a local University, it is reported that 81% of students own a wireless device. If 5 students are selected at random, what is
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34.87% probability that all 5 have a wireless device

Step-by-step explanation:

For each student, there are only two possible outcomes. Either they own a wireless device, or they do not. The probability of a student owning a wireless device is independent from other students. 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.

81% of students own a wireless device.

This means that p = 0.81

If 5 students are selected at random, what is the probability that all 5 have a wireless device?

This is P(X = 5) when n = 5. So

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

P(X = 5) = C_{5,5}.(0.81)^{5}.(0.19)^{0} = 0.3487

34.87% probability that all 5 have a wireless device

5 0
3 years ago
How do I find the answer to m
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Set the angles equal because they are vertical angles

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3 years ago
The following stem-and-leaf plot represents the scores earned by Mr. Roberts's class on their most recent science test. What is
pogonyaev

Hey!

Sorry for this late response...

I actually had this same question

so the answer is : 81

~hope this helps~

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3 years ago
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