Answer:
16 cards in 1 hour
Step-by-step explanation:
8 cards, 1/2 hour
16 cards in 1 hour
Make a proportion.
8/30min= x/60min
Solve the proportion by cross- multiplying.
30x=480
3x=48
x=16
Answer: He makes $111.80 in 2 days.
Step-by-step explanation:
Since we have given that
Amount he makes in 3 days = $167.70
Number of days = 3
We need to find the amount he makes in 2 days.
We will use "Unitary method" to find the amount s in 2 days.
In 3 days , amount = $167.70
In 1 day, amount is given by
In 2 days, amount is given by
Hence, he makes $111.80 in 2 days.
It is 236. Happy to help (:
Answer:
The correct option is C) large sample size (n) with small variance.
Step-by-step explanation:
Consider the provided information.
It is given that the other factors are held constant, and we want the narrowest confidence interval for a population mean.
Confidence interval for a population mean is directly proportional to variance and inversely proportional to the sample size.
If we increase the variance, CI will increase. But we want the narrowest CI, so variance should be small.
As CI is inversely proportional to sample size, therefore if we increase the sample size CI will decrease.
Hence, the correct option is C) large sample size (n) with small variance.
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