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3 years ago

How do you do 2000 decreased by 33 % as a proportion because it is very confuzling ;)

Mathematics

1 answer:

jenyasd209 [6]3 years ago

4 0

Source: https://socratic.org/questions/what-is-2000-miles-increased-by-by-33

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3 years ago

Of the 200 students surveyed at the local high school, 126 say that they prefer earlier start times for school. What is the mean

ra1l [238]

Answer:

The mean of sampling distribution of the proportion of the students who prefer later start times for school

μₓ = p = 0.63

Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given sample size 'n' =200

given data Of the 200 students surveyed at the local high school, 126 say that they prefer earlier start times for school

sample proportion

$p = \frac{x}{n} = \frac{126}{200} = 0.63$

The mean of sampling distribution of the proportion of the students who prefer later start times for school

μₓ = p = 0.63

Standard deviation of the proportion

$S.D = \sqrt{\frac{p(1-p)}{n} } = \sqrt{\frac{0.63(1-0.63)}{200} } = 0.034$

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3 years ago