Stat 322 - Homework 6
Maximum score: 20 points; due Thursday, October 22, 2015
1
1100 Club for Pumpkin Growers
Todd Holland from New York grows pumpkins. He studied his past records carefully and
concluded that the weights of his biggest pumpkins are dist
Stat 322 Exam 1 October 1, 2015
Name
Note: Points for each question are indicated in the left margin in square brackets.
1. A computer manufacturer purchases 20%, 45%, and 35%, of its microchips from suppliers A, B,
and C. The defective rates of microchip
Stat 322
Exam 1
February 17, 2006
Note: Points for each question are indicated in the left margin in square brackets.
1. A company receives 50%, 30%, and 20% of its wafers from suppliers A, B, and C. The defective
rates of wafers received from suppliers A
Stat 322
Exam 2
April 7, 2006
Name
Note: Points for each question are indicated in the left margin in square brackets.
1. Suppose that engineering specications on the diameter of a #10 machine screw produced on
a particular machine are from 4.65 mm to 4.7
Stat 322 - Homework 8
Maximum score: 20 points; due Thursday, November 5, 2015
1
Signal Transmissions
Binary signals are transmitted at a constant rate of 1000 per second. Suppose that transmission errors occur independently with a probability of p = 0.00
Stat 322 - Homework 3
Maximum score: 20 points; due Thursday, September 17, 2015
1
Driving Test
An individual repeatedly attempts to pass a driving test. Suppose that the probability
of passing the test with each attempt is 0.25, and that the results of s
Stat 322 Exam 2 November 12, 2015
Name
Note: Points for each question are indicated in the left margin in square brackets.
1. Suppose that the resistances of nominal 100 Q resistors made by a manufacturer have a normal
distribution with mean u = 99.9
Stat 322 - Homework 1
Maximum score: 20 points; due Thursday, September 3, 2015
1
Broken Components
Four components are inspected (each component can be defective or non-defective) and three
events are dened as follows:
A : all four components are found t
Stat 322 - Homework 4
Maximum score: 20 points; due Thursday, September 24, 2015
1
Snow in October
Suppose that the probability that a blizzard will occur in Iowa on any particular day starting
from October 1 is 0.1. For simplicity, assume for the followi
Stat 322 - Homework 5
Maximum score: 20 points; due Thursday, October 8, 2015
1
Random Numbers
When you generate a random number using your calculator, the random number you get is
a realization of a uniform (0, 1) random variable. Suppose that 60 student
Stat 322 - Homework 9
Maximum score: 20 points; due Thursday, November 19, 2015
1
Weld Breaking Strength
In an inertia welding experiment, a sample of 50 welds was tested. The sample mean and the
sample standard deviation of the breaking strengths of thes
Stat 322 - Homework 7
Maximum score: 20 points; due Thursday, October 29, 2015
1
Apple-Tree Farms
Able and Baker are both apple-tree farmers (they grow apple trees). Assume that apple
trees grow according to a normal distribution. On the Able Farm, trees