Answer:
x=24 or 25
Step-by-step explanation:
90% is x=24
89.999999 repeat% is x =25
Try this suggested example.
PS. the 1st step is marked with red, the 2d step - with green, the 3d step - with blue colours, then the final step is marked with orange.
I’m thinking 120 because if they added ten to each that totals up to 20 and 140-20=120
Answer:
The 90% confidence interval for the percentage of people the company contacts who may buy something is between 10.82% and 14%
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
.
For this problem, we have that:

90% confidence level
So
, z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:

The upper limit of this interval is:

The 90% confidence interval for the percentage of people the company contacts who may buy something is between 10.82% and 14%
Answer:
2299
If there were 1743 people at the fair yesterday and today there are 556 more people at the fair, then we would add 1743 plus 556 and get the answer 2299.
hope this helped xx