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A farmer is planning to build a right triangular enclosure in his back pasture. He has already determined the length of the base
1 answer:
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Answer:
Step-by-step explanation:
-For a known standard deviation, the sample size for a desired margin of error is calculated using the formula:
Where:
is the standard deviation
is the desired margin of error.
We substitute our given values to calculate the sample size:
Hence, the smallest desired sample size is 23
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.
The cost of pounds chocolate milk is $6.25 more than the cost of
pounds of Caramel.
Step-by-step explanation:
Given,
Cost of one pound of Caramels = $10.28
Cost of pounds of Caramel =
Cost of pounds =
Cost of one pound of chocolate milk = $13.85
Cost of pounds =
Cost of pounds =
Difference = 24.24 - 17.99 = $6.25
The cost of pounds chocolate milk is $6.25 more than the cost of
pounds of Caramel.
Keywords: difference, multiplication
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