So if 5 tickets sold for $15, then I believe one ticket will cost $3.
Answer:
12, 1
Step-by-step explanation:
12- 6(1)=
12-6= 6
Answer:
Looks good to me.
Step-by-step explanation:
Looks good to me.
Answer:
48
Step-by-step explanation:
Fourth day, sixth day, both geysers erupted
4 × 6 × 2 = 48
Answer:
The minimum number of cities we need to contact is 96.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of
, and a confidence interval
, we have the following confidence interval of proportions.

In which
Z is the zscore that has a pvalue of
.
The margin of error is:

95% confidence interval
So
, z is the value of Z that has a pvalue of
, so
.
In this problem, we have that:







The minimum number of cities we need to contact is 96.