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

D) Both A and C are correct.

Step-by-step explanation:

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

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

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

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

Therefore, Both A and C are correct.

98 points djdjsi zisksis sjsjsi sisksj sksjdj sksks sjsisj

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

happy to

pls mark as brainliest