1) Khan has a 0.6 probability of making a free throw. Suppose each free throw is independent of the other. If he attempts 10 free throws, what is the probability that he makes at least 2 of them?
0.001 0.998
0.912 0.852
2) Binomial random experiments have random variable as success in the sample, success in the trial, failure in the sample, and failure in the trial.
3) By investing in a particular stock, a person can make a profit in 1 year of Rs. 4000 with a probability of 40% and a loss of Rs. 1000 with a probability of 60%. What is the person's expected gain?
1000 500
2000
200
4) Discrete data are made continuous by using class boundaries, class intervals, cumulative frequency, and probability.
5) From a lot of 12 missiles, 5 are selected at random and fired. If the lot contains 3 defective missiles that will not fire, what is the probability that all 5 will fire?
0.159 0.2
0.1 0.21
6) Compute the probability of getting 5 in 6 trials if a fair dice is tossed 10 times.
0.1149 Answer not given
0.2249
0.0004
7) Find the expected number of Jazz records when 4 records are selected at random from a collection consisting of 5 Jazz records, 2 classical, and 3 pop records.
1 2
3
4
8) Average value is always expected value, variance, standard deviation, and probability.
9) A research survey with outcomes being defined as Poor, Average, Good, Excellent is a random experiment with a random variable being of type ordinal, nominal, continuous, and ratio.
10) A small voting district has 110 female voters and 90 male voters. A random sample of 10 voters is drawn. What is the probability exactly 7 of the voters will be female?
0.75 0.51
0.224
0.1665