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Leya [2.2K]
3 years ago
6

Walter walked 15.5 block from his house to work. It took him 35 minutes. What is his rate in blocks per hour

Mathematics
1 answer:
Sonbull [250]3 years ago
6 0
For this case we first calculate the rate in blocks per minutes.
 rate = (15.5) / (35) = 0.443 blocks per minutes.
 Then, we can go to blocks per hour.
 Remember: 1h = 60min.
 rate = 0.443 * (1/60) = 0.00738 blocks per hour.
 answer
 his rate in blocks per hour is 0.00738 blocks per hour.
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The size of the sample they should take to estimate p with a 2% margin of error and 90% confidence is n = 1691.

In statistics, the margin of error is just the degree of a significant error in the outcomes of random sample surveys.

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Now, the proportion is not given so adopt nominal (p-vector) = 0.05

The critical value at CL of 90% is 1.645.

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1 year ago
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8 0
3 years ago
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Hey there!

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Hope this helps
Have a great day (:
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