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Lyrx [107]
3 years ago
15

2) Cereal cost $7 / box. How many boxes did Huong buy if she spent $21?

Mathematics
2 answers:
Vikentia [17]3 years ago
8 0
3 boxes 7X3=21 so there is your answer
uysha [10]3 years ago
3 0
Answer:3 boxes.
Explanation: $21 / $7=3 boxes
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According to the American Community Survey, 27% of residents of the United States 25 years old or older had earned a bachelor de
oksian1 [2.3K]

a. The reason why this question is a binomial experiment is based on the fact that it is made up of an independent sample, it has a number that is fixed and a probability.

Each event is made up of two outcomes and they are random with the same success rate.

<h3>b. How to solve probability that exactly 5 had a bachelor</h3>

we have the following data n = 12, p = 0.27 and k = 5

We have to use the function to solve electronically

binompdf(n,p,k)

input the values

= binompdf(12,0.27,5)

This gives us

= 0.1255

<h3>(C) Probability that fewer than 5 have bachelor</h3>

We use the formula below

= binompdf(12,0.27,5-1)

This is = 0.7984

D. Probability of at least 5

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= 0.2016

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Mean = 12*0.27 = 3.24

and

standard deviation = √npq

n = 12, p = 0.27 , q = 1- 0.27

= 0.73

sd = √12*.27*.73

= 1.54

Read more on binomial experiment here:

brainly.com/question/9325204

#SPJ1

3 0
2 years ago
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