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Reptile [31]
2 years ago
14

Alex walked 1 mile in 15 minutes Sally walked 3,520 yards in 24 minutes in miles per hour how much faster did sally walk than Al

ex
Mathematics
1 answer:
SSSSS [86.1K]2 years ago
5 0
Hi there, to find the answer, we are going to need a equation. So, let's get started. I know that 1 mile equals 1,760 yards, I also know that Alex walked 1 mile in 15 minutes and Sally walked 2 miles in 24 minutes. So, Alex walked 1/4 of an hour and Sally walked 2/5 of an hour, there is 4 miles in 1 hour and 5 miles in 1 hour. We subtract 5 from 4 and we get 1.
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Answer:

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To calculate the expected numbers of smokers in a sample with size n=140 and proportion p=12%, we use the expected value of the binomial distribution:

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If we take a sample at the opening of the gym, the sample is not expected to be representative of the population of the students. Most of the students that go to the gym usually have healthy habits, so the proportions of smokers is expected to be lower than the average of the university population.

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Step-by-step explanation:

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