jacob7542
06.09.2020 •
Mathematics
Solve x2 − 8x + 15 < 0.
Recall that the quadratic factors as:
(x − 3)(x − 5) < 0
Therefore, the intervals that must be tested are
x < 3, 3 < x < 5 and x > 5.
The solution set for the quadratic inequality is:
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Ответ:
Step-by-step explanation:
Engineers want to design seats in commercial aircraft so that they are wide enough to fit 98% of all males. Men have hip breadths that are normally distributed with a mean of 14.4 inches and a standard deviation of 1 inch. find P98. I really don't understand, help needed please.
Find the z-value with a left tail of 0.98
invNorm(0.98) = 2.0537
Find the corresponding x-value using x = zs+u
x = 2.0537*1+14.4
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x = 16.45 inches