Question

Answer all parts thourgh A and thourgh D please

College bound: A national college researcher reported that 65% of students who graduated from high school in 2012 enrolled in college. Thirty two high school graduates are sampled. Round the answers to four decimal places. Part 1 of 4 (a) What is the probability that exactly 20 of them enroll in college? The probability that exactly 20 of them enroll in college is . Part 2 of 4 (b) What is the probability that more than 15 enroll in college? The probability that more than 15 enroll in college is . Part 3 of 4 (c) What is the probability that fewer than 14 enroll in college? The probability that fewer than 14 enroll in college is . Part 4 of 4 (d) Would it be unusual if more than 23 of them enroll in college? It (Choose one) be unusual if more than 23 of them enroll in college since the probability is .

Answer 1

* given p=0.65 n=32 eshng Birewal dist'butën P(x=>] = ng po ghar d) PCX=203 => 32420 60.65)1°C1-0-65358 3 0-1383 b) PCX>15) = 1-PCX315) =1-CP(x=0J+P(x=1) +..... +P(x=15)] - 1-2 3146653°(60-637......... sebe position ----+3143 065)*(1-0-6539 = 10:026896730732812 - 0.9731 5) PCX<14)= P(x=0) +P(x=1) 7.-.-- + P(x=137 2316060.65)°C106597 ...... .---- +324, bos%C-06875 -) 0.0041748348645432 Ĉ 0.0042 d) P(x>23) = P(x+24) +P(x=2537- --- -+P(x=32) 0.1584 iScan it wouldn't be unsual , since the probability is 0.1584 anned with CamScanner