Answer:
D. 8
Step-by-step explanation:
We have been given that the number of days that homes stay on the market before they sell in Houston is bell-shaped with a mean equal to 56 days. Further, 95 percent of all homes are on the market between 40 and 72 days.
As per empirical rule 95% of the data on bell curve lies between 2 standard deviations of mean.
So we can set an equation as:
or





Therefore, the standard deviation for our given data is 8 and option D is the correct choice.
B is just the y-intercept or where the line goes over the y axis so it would be 50
Answer:
15 mister of cloths are needed to make 15 m if 1 puchu is 1 miter
Answer:
a = 11, b = 7
Step-by-step explanation:
See picture
12^2 + 5^2 = c^2
144+25=169
c=13m