Answer:
We need a sample size of at least 1161.
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 zscore that has a pvalue of 
.
The margin of error for the interval is:
For this problem, we have that:
90% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
How large a sample should she take?
We need a sample size of at least n.
n is found when 
So
Rounding up
We need a sample size of at least 1161.
Answer:
Repeating decimal (number) and rational
Step-by-step explanation:
the answer is there no explanation needed
Diagonal = √50² + 40² = √2500+1600 = √3900 = 10√39 miles
Answer:
Naruto usamaki is the greatest hokagey in the leaf village
Answer:
100 km/hr
Step-by-step explanation:
11:00 a.m. less 7:30 a.m. works out to 3:30 hours (3 hours 30 minutes).
Then the speed of the bus was
350 km
--------------- = 100 km/hr, or about 62.5 mph
3.5 hrs
