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Genrish500 [490]
3 years ago
14

I found the expected value for the number of boys for a family with five children to be 2.5. I must have made an error because a

family with 2.5 boys cannot occur
Mathematics
1 answer:
ICE Princess25 [194]3 years ago
8 0

Answer:

We are meant to round down fractions of persons to the nearest whole number possible

Step-by-step explanation:

Here we have the question with regards the result of a fraction of a person to a solution of a statistic question.

Where the result is a fraction, the format is, since most solutions to questions in statistics with regards to people pertain to the maximum amount of persons that fit a class, and since it is not technically feasible to account for the next half of the person after getting your result, we have to put down only the number of whole people possible which means as a rule we always round down the decimal or fractions  to the nearest whole number of person

Therefore, you are correct, only that we can put 2 instead of 2.5 as your answer.

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The store price of a jeans is $50. If the discount given by the store is 45%, calculate the discount amount offered by the store
nata0808 [166]

Step-by-step explanation:

50+45%=72.5

50-45%=27.5

50×45%=22.5

7 0
3 years ago
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harkovskaia [24]
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3 years ago
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The perimeter of a rectangular swimming pool is 154m.Its length is 2m more than twice its breadth. What are the length and bread
TiliK225 [7]

P = 154\\a = 2b + 2

a = ?; b = ?

P = 2(a + b) = 2(2b + 2 + b) = 2(3b + 2) = 6b + 4

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a = 2b + 2 = 2 * 25 + 2 = 50 + 2 = 52

Answer: 25 and 52 m.

3 0
3 years ago
5(8x-3)+4(-6x-4)<br> Distribute then simplify
Nikitich [7]

Answer:

16x - 31

Step-by-step explanation:

Write the full equation:

5(8x - 3) +4(-6x - 4)

Distribute:

40x - 15 - 24x - 16

Combine Like Terms:

16x - 15 - 16

Your answer is:

16x - 31

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Alexeev081 [22]
Exact form: 
5/7

Decimal form:
0.71428571... 


3 0
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