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podryga [215]
3 years ago
11

What is the ratio of seats to wheels in a group of tricycles

Mathematics
1 answer:
Gala2k [10]3 years ago
7 0
1 seat to 3 wheels so
1:3
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g 78% of all Millennials drink Starbucks coffee at least once a week. Suppose a random sample of 50 Millennials will be selected
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We know that n = 50 and p =0.78.

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Solution to the problem

We know that n = 50 and p =0.78.

We need to check the conditions in order to use the normal approximation.

np=50*0.78=39  \geq 10

n(1-p)=50*(1-0.78)=11 \geq 10

Since both conditions are satisfied we can use the normal approximation and the distribution for the proportion is given by:

p \sim N (p, \sqrt{\frac{p(1-p)}{n}})

With the following parameters:

\mu_ p = 0.78

\sigma_p = \sqrt{\frac{0.78*(1-0.78)}{50}}= 0.0586

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The length of a side is 18.
Here is my work attached:
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2 years ago
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