The expression 10,785(1.0275)x represents the amount of money in an investment account with interest that compounds annually for
1 answer:
Answer: It shows the formula for "Amount" using the compound interest formula.
Step-by-step explanation:
Since we have given that
The expression :
So, it can be rewritten as
Here, initial investment = $ 10785
Rate of interest = 2.75%
Number of years = x
So, it shows the formula for "Amount" using the compound interest formula.
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Answer:
a) Narrower
b) Narrower
c) Wider
Step-by-step explanation:
We are given the following in the question:
Proportion of coworker who received flu vaccine = 32%
98% confidence interval: (0.231, 0.409)
Confidence interval:
a) Sample size had been 600 instead of 150
If we increase the sample size, thus the standard error of the interval decreases.
Since the standard error decreases, the confidence interval become narrower.
b) Confidence level had been 90% instead of 98%
As the confidence level increases, the confidence interval becomes narrower. This is due to a smaller value of z-statistic at 90% confidence level.
c) Confidence level had been 99% instead of 98%
As the confidence level increases, the width of the confidence interval increases and the confidence interval become wider. This is because of a larger value of z-statistic at 99% confidence interval.