OK, so she definitely drove home faster than when she drove to her first destination. So she must've taken quicker to get home. Lets assume 3 hours on the way there and 2 hours on the way back.
I really hoped this helped. I'm no genius, but you asked for help and I tried to give it.
Have a great day.
1-2. The best estimate for the population mean would be sample mean of 60 gallons. Since we know that the sample mean is the best point of estimate. Since sample size n=16 is less than 25, we use the t distribution. Assume population from normal distribution.
3. Given a=0.1, the t (0.05, df = n – 1 = 15)=1.75
4. xbar ± t*s/vn = 60 ± 1.75*20/4 = ( 51.25, 68.75)
5. Since the interval include 63, it is reasonable.
Answer:
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Step-by-step explanation:
Answer:
2+5=7
Step-by-step explanation:
eg.1 box has 15 pencils which means cindy have 30 pencils and patrice have 75
Answer:
AB = square root of 403
Step-by-step explanation:
use the pythagorean theorem to solve for AB.
a^2 + b^2 = c^2
9^2 + b^2 = 22^2
81 + b^2 = 484
b^2 = 484 - 81
b^2 = 403
b = 20.07
