Mean of the low is approximately 47.7 Median of the low is 45 and 50 or 47.5
Answer:

The sample size needed is n(if a decimal number, round up to the next integer), considering the estimate of the proportion
(if no previous estimate use 0.5) and M is the desired margin of error.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of
, and a confidence level of
, we have the following confidence interval of proportions.

In which
z is the z-score that has a p-value of
.
The margin of error is of:

95% confidence level
So
, z is the value of Z that has a p-value of
, so
.
Needed sample size:
The needed sample size is n. We have that:






The sample size needed is n(if a decimal number, round up to the next integer), considering the estimate of the proportion
(if no previous estimate use 0.5) and M is the desired margin of error.
I think the answer would be #2
Answer:
731 miles
Step-by-step explanation:
To solve this, we can set up a proportion.
Let's name the number of miles he travels in 17 hours x for now.
8/344=17/x
Simplify 8/344
2/86=17/x
Cross multiply
86*17=2*x
2x=1462
Divide both sides by 2.
x=731
He would travel 731 miles in 17 hours.