The mean cost for a pint of frozen yogurt is $1.50, with a standard deviation of $0.10. What is the value of the variance?
a.) $0.40
b.) $0.10
c.) $0.01
d.) $0.20

The correct answer is:

0.01$ (c)

Step-by-step explanation:

Standard deviation is a measure of how spread out numbers are from the mean value. The formula for standard deviation is given by:

Variance is a measure of the squared differences from the mean.

Variance is simply the square of the standard deviation. It is mathematically shown as:

Now in our example,

Stabnard deviation = $0.10

Variance = (standard deviation)²

Variance = (0.10)²

Variance = $0.01

c 1 hour

step-by-step explanation:

m = 2e

m = 2 so 2 = 2e

1 = e

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i