Mathematics, 19.10.2021 06:30 Lilbre9444
The amount of sleep that elementary school children get per night follows a normal distribution with a mean of 9.5 and a standard deviation of .55 hours.
a) find the proportion of elementary school children who get between 9 and 10 hours of sleep per night. sketch the normal curve and shad the area under the curve that is the answer to the question.
b) is it unusual for an elementary school student to get at least 12 hours of sleep? justify your answer.
Answers: 3
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Franklin neason earns $5,250 a month as a sales manager. what is his semimonthly salary? a.$10,500b.$5,250c.$2,365d.$2,625
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Mathematics, 21.06.2019 18:30
Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 3, 4+2i, 1+(sqrt)7 the answer is supposed to be: f(x)=x(^5)-13x(^4)+60x(^3)-82x(^2)-144x+360 what am i doing wrong?
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Mathematics, 21.06.2019 19:30
If (17, 4) is an ordered pair of the inverse of f(x), which of the following is an ordered pair of the function f(x)? a. (17,4) b. (4.17) c. (4,0) d. 0,17)
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