Question

The mean temperature for july in H-town 73 degrees fahrenheit. Assuming that the distribution of temperature is normal what would the standart deviation have to be if 5% of the days in july have a temperature of at least 87 degrees?

55

likes276 views

Timmothy

4.8

22 Answers

given
P(Z>z)=0.05
1-P(Z \sigma=\frac{\left(\overline{x}-\mu\right)}{z}
\sigma=\frac{\left(87-73\right)}{1.6449}=8.51
hence required standard deviation=8.51

Frequently asked questions (FAQs)

Question: Find the absolute extrema of f(x) = x^3 - 4x^2 - 3x + 2 on the interval [0, 5].

+

What is the value of f(10) for the reciprocal function f(x) = 1/x? (

+

Question: Find the derivative of f(x) = 3x^2 - 4sin(x) in terms of x.

+

New questions in Mathematics