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2 years ago

3/4 times 7, find product as an improper fraction

Mathematics

2 answers:

Tasya [4]2 years ago

4 0

Well you do    3 7
   --- x --- and your answer would be 21/4.
   4 1

hope that helped

harina [27]2 years ago

4 0

21/4 is your answer because

3×7=21
4×1=4

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A researcher wants to estimate the percentage of all adults that have used the Internet to seek pre-purchase information in the

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Answer:

The required sample size for the new study is 801.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is:

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This means that $\pi = 0.25$

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This is n for which M = 0.03. So

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$0.03\sqrt{n} = 1.96\sqrt{0.25*0.75}$

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$n = 800.3$

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2 years ago

Thanks! Help is appreciated

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Answer:

Step-by-step explanation:

sorry if i am incorrect but that is my best guess

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