Use technology or a z-distribution table to find the indicated area.

the ages of visitors to a theme park are normally distributed with a mean of 15 years and a standard deviation of 5.2 years.

approximately 70% of the visitors to the theme park are older than which age?

The answer is B.12.3 years of age

Hope this Help:)

12.3

Step-by-step explanation:

We need to use either a calculator or a z-score table to find P(x>z) = 0.70.  Or P(x<z) = 0.30.

Looking it up in a z score table, z is approximately -0.525.

z = (x - μ) / σ

-0.525 = (x - 15) / 5.2

x = 12.27

So approximately 70% of the visitors are older than 12.3 years.

2 over 5

step-by-step explanation:

the 2: 3 ratio is the length of the ac segment to the cb segment total length. this implies that the ratio between segment ac length and segment ab length is 2: 5. point c is 2/5 from a to b, so the required fraction is 2/5.

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation: