The sum is 15.
Divide 15 by three to get Jane's age= 5
The remainder, which is J * 2, or ten, is Randy's age.
Randy is ten.
Answer:
The 95% confidence interval for population mean is (18.19, 23.81).
Step-by-step explanation:
The confidence interval for population mean using the Student's <em>t</em>-distribution is:

Given:

The critical value of <em>t</em> for <em>α </em>= 0.05 and degrees of freedom, (<em>n</em> - 1) = 19 is:

Compute the 95% confidence interval for population mean as follows:

Thus, the 95% confidence interval for population mean is (18.19, 23.81).
Bob and Tara lifts 318.7lb.
So each one would, ideally, be lifting half.
318.7/2=159.35lb.
But, that's not the case. Bob can lift 22.1 more.So:
159.35+22.1 = 181,45
While Tara lifts:
137,25.
Bob: 181,45
Tara: 137,25
The slope is y2-y1/x2-x1 = 9-(-3)/8-(-4)=9+3/8+4= 12/12=1
So the slope is 1