Question

need help please asap

10) Find the standard deviation, o, for the binomial distribution with t = 38 and p=0.4. A) 0 =6.29 B) 0=0.61 C) o = 3.02 D) a = 7.14 11) According to a college survey, 22% of all students work full time. Find the mean for the number of students 11) who work full time in samples of size 16. A) 2.8 students B) 3.5 students C) 0.2 students D) 40 students 12) 12) Use the given values of 1205 and p = 0.98 to find the minimum value that is not significantly low. 20, and the maximum value that is not significantly high, 11+ 20. Round your answer to the nearest hundredth unless otherwise noted. A) Minimum: 1176.04; maximum: 1185.76 B) Minimum: 1190.62 : maximum: 1171.18 C) Minimum: 117403; maximum: 1187.77 D) Minimum: 1171.18; maximum: 1190.62

Answer 1

Question 10

0 = Vnp(1 - ) = V38 + 0.4 % 0.6 = 3.02

answer is C) 3.02

Question 11

p=0.22

n=16

Mean=np=16*0.22=3.52

answer is B) 3.5 students

Question 12

n=1205

p=0.98

Minimum = np–2* V np(1 – p) = 1205*0.98 – 2* V1205 * 0.98 * 0.02 = 1171.18

Maximum = np+2* Vnp(1 – p) = 1205*0.98+2 *V1205 * 0.98 * 0.02 = 1190.62

Answer is D) minimum: 1171.18; maximum: 1190.62

Question 8

answer is B) Not binomial: there are more than two outcomes for each trial.

Question 9

answer is A) The procedure results in a binomial distribution

as we have only 2 outcome that is yes(5) or no(1,2,3,4,6)