Answer:
<h2><em><u>ᎪꪀsωꫀᏒ</u></em></h2>➪17.65625
Step-by-step explanation:
in how many ways can you make change for 20$ using quarters and dimes , with at least one of each coin being used ?
1 answer:
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Answer:
A normal distribution or z-test is used to construct a confidence interval.
Step-by-step explanation:
We are given the following in the question:
Sample mean, = $3120
Sample size, n = 40
Population standard deviation, σ = $677
The distribution of earnings of college is a normal distribution.
Conditions:
- Since we are given the population standard deviation and the the sample size is also greater than 30.
Conclusion:
Thus, we use a normal distribution or z-test to construct a confidence interval.