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Ierofanga [76]
3 years ago
11

SAT scores of students at an Ivy League college are distributed with a standard deviation of 250 points. Two statistics students

, Raina and Luke, want to estimate the average SAT score of students at this college as part of a class project. They want their margin of error to be no more than 25 points.(a) Raina wants to use a 90% condence interval. How large a sample should she collect?Raina should sample at least people.

Mathematics
1 answer:
Minchanka [31]3 years ago
8 0

Answer:

The sample size should be 273 students

Step-by-step explanation:

Here Raina wants to use 90% interval then

ME = z. SE

SE = s d/√n at end

ME/z   = s d/√n

n={z.sd/ME)²

Z = 1.65    =>due to  90%confidence interval

ME= 24

sd=250

putting these value in the question we get 273 students

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Answer:

27

Step-by-step explanation:

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Next we multiply the 4 and the 5 together to get 20

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20-(-7) = 27

This can also be written as 20 plus 7 as a mathematical rule states: two negatives make a positive. So:

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There are 44 total small egg cartons, 264 / 6 = 44

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There is a total of 352 eggs in the small egg cartons, 44 x 8 = 352

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Hope this Helps! :)

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