Carly tutors students in math on the weekends and offers both thirty-minute sessions and sixty-minute sessions. She earns $15 fo
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Given:
On a long hike . Heather drank 7 pints of water.
Required:
How much did she drink in quarts?
Explanation:
We need raltion between pints and quarts.
We have 7 pints of water.
So,
Answer:
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%