Activity 1 Solutions 1 . A and B are independent events. Which of the following must be true? (4 pts) a. b. c. d. A and B are mutually exclusive. Ac and Bc are independent. P( A B) = P( A).P( B) None of the above are true
2. A simple random sample is guar
Activity 2Solutions 1. A random sample of size n = 30 is taken from a population with mean and standard deviation . Which statement is generally correct? (4 pts) a. X is an estimate of ; s is an estimate of . b. is an estimate of X ; is an estimate of s.
STAT 380 Group Activity 1 Solutions 1. ( 10 pts)Four cards will be dealt from the top of a well-shuffled deck. You have the choice of two bets: A. Win if you get a club, diamond, heart and spade IN THAT ORDER B. Win if you get four different suits in the
Group Activity 2Solutions 1. (8 pts) Determine which probability distribution best describes each of the following scenarios: (Binomial/Poisson/Normal/Exponential/Uniform/None we have learnt) a. A manufacturer of light bulbs claims that 90% of its bulbs h
STAT 380, Fall 2010 HW 1 Solutions 1. Solve : a) Ex 1.3 in the book.
219 214 . 205 =209.9 psi 10 Mean_noaging=222.1 psi There are 10 observations, so the median is the average of the 5th and 6th observation in the ordered arrangement. So Median_age=(209+2
HW 3 Solutions 1. The first digit of a parts serial number is equally likely to be any of one of the digits 0 through 9. Let X be the random variable denoting the first digit of the serial number on a randomly selected part from a large batch. a. What is
STAT 380, Fall 2010 HW 2Solutions (Chapters 3 & 4) 1. Let X be a continuous r.v. with probability density function given by f(x) =
x 10 200 0
for 10 x c Otherwise
a. Determine c such that f(x) is a probability density function.
Using
x 10 dx 1 , we get c=