The depth of the snow at yellowstone national park in april at the lower geyser basin was normally distributed with a mean of 3.9 inches and standard deviation of 0.52 inches. what value is two standard deviations above the mean?

Step-by-step explanation:

For a standard normal distribution of mean and

the statistic

In this problem we look for the value of X that is 2 standard deviations above the mean.

If there are two standard deviations above the mean, then, in the standard normal distribution, the statistic .

Then, we clear X.

Where:

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%