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Natasha_Volkova [10]
3 years ago
14

A student reports that, of a simple random sample of 50 college u undergraduate students, 21 % were taking more than fifteen cre

dit hours we know that the student has made mistake (or maybe really did not conduct the survey). Why? A) There are . 5 0 students in the sample, so percentages should be multiples of 2% B) There are 50 students in the sample, so percentages should be multiples of 0.02% c) D) 21% of 50 students is 10.5 students, and you cannot sample a fraction of a student. Both A and C are correct. E) Both B and C are correct
Mathematics
1 answer:
algol133 years ago
6 0

Answer:

D) Both A and C are correct.

Step-by-step explanation:

If the sample contains 50 students, the percentage equivalent to each student is:

P = \frac{100\%}{50}=2\%

Each student corresponds to 2%, which means that percentages should be multiples of 2%.

21% is not a multiple of 2% and corresponds to:

n = 0.21*50 = 10.5

21% of 50 students is 10.5 students, and you cannot sample a fraction of a student.

Therefore, Both A and C are correct.

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