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miskamm [114]
3 years ago
9

The oldest three smith children took reading exams and scored 91%, 89%, and 97% respectively. If four smith children had a test

average of 92%, what did the youngest child score on the exam?
Mathematics
2 answers:
fenix001 [56]3 years ago
5 0

Answer:91

Step-by-step explanation:

Sveta_85 [38]3 years ago
3 0
It’s 91 i used guess b check method taking the 91+89+97+x and divided by 4 till you get 92 as your awnser.
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74% of 19 year old males are atleast 172 pounds , what percent of the males are not atleast 172 pounds?
swat32

Answer:

<em>The percentage of males are not at least 172 pounds</em>

P(X⁻ ≥ 172) = 0.26

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that 74% of 19 -year -old males are at least 172 pounds

Let 'X' be a random variable in a binomial distribution

P( X≥172) = 74% = 0.74

<em>we have to find that the percentage of males are not at least 172 pounds</em>

<u><em>Step(ii):-</em></u>

<em>The probability of males are not at least 172 pounds</em>

P(X⁻≥172) = 1- P( X≥172)

                 = 1- 0.74

<em>                  = 0.26</em>

<u><em>Final answer:-</em></u>

<em>The percentage of males are not at least 172 pounds</em>

P(X⁻ ≥ 172) = 0.26

<u><em></em></u>

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I need help solving this problem.
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Answer:

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