Mrs. Rykus does a survey of her 85 students. 20 say math is awesome 35 say math is the best 30 say math is fu

Question

Mrs. Rykus does a survey of her 85 students.
20 say math is awesome
35 say math is the best
30 say math is fun

Based on these results, if Mrs. Rykus asks the whole student population 900 students what they think of math, what is the best approximation for how many students will say math is awesome?
A 400
B 212
C 200
D 315

minhkhoi · Answer

Answer:   212   Step-by-step explanation:   85 here is 100%  And 900 is also 100%  That's for the different comparisons. So now, what we do is, we should divide 85 by 900, and then, whatever is our answer, multiply that by 20.  That is surely going to equal how many students are going to say that Math is Awesome for 900 student survey.     Step 1   85/900=10.5882352941  Let's round that to make it   10.5     Step 2   10.5x20=210  That means, if we go exactly, like multiplying all of those numbers, then our answer should be 212  or  200.     Just to be sure that our answer is correct, we will do it with 10.58 now.     Step 3   10.58x20=211.6  So now it looks like it's most probably going to be 212    But still, let's do 10.588 now.     Step 4   10.588x20=211.76    Okay, let's do it again, with 10.5882     Step 5   10.5882x20=211.764     Okay, so I just multiplied the whole number this time, and I still got a decimal, so that means that your answer is 212 basically.

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select the most appropriate response. what does it mean when sample results are not statistically significant?

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