Question

with explanation please question 7 it is with replacement

QUESTION 5 Answer the question. Assume that a probability distribution is described by the discrete random variable x that can assume the values 1, 2,...,n; and those values are equally likely. This probability has mean and standard deviation described as follows: 1 = *and o = 1/2 Show that the formulas hold for the case of n = 7. TTT Arial 3 (12pt) T E NSO's Path:p Words:0 QUESTION 7 Determine whether the given procedure results in a binomial distribution. If not, state the reason why. Choosing 10 marbles from a box of 40 marbles (20 purple, 12 red, and 8 green) one at a time with replacement, keeping track of the number of red marbles chosen. Procedure results in a binomial distribution. Not binomial: there are more than two outcomes for each trial. Not binomial: the trials are not independent. Not binomial: there are too many trials. QUESTION 9 Find the indicated probability. In one city, the probability that a person will pass his or her driving test on the first attempt is 0.60.11 people are selected at random from among those taking their driving test for the first time. What is the probability that among these 11 people, the number passing the test is between 2 and 4 inclusive? 0.0753 0.0934 0.0986 0.1092

Answer 1

Question 7

The procedure results in binomial experiment because

1. there are 2 outcome.

a.) Red and P(Red)=12/40

b.) Non-red and P(Non-red)=28/40

2. Trials are independent.(with replacement)

3.) p=P(Red) remains same in each trial.