85-222 : Confidence Intervals
Sample Multiple Choice Questions
1. An economics professor randomly selected 100 millionaires in the United States. The average
age of these millionaires was 54.8 years with a standard deviation of 7.9 years. What is the
95%

85-222: Confidence Intervals
Practice Computational Questions
1. Resistance measurements were made on a sample of 81 wires of a certain type. The
sample mean resistance was 17.3 m. and the standard deviation was 1.2 m.
a. Find a 98% confidence interval fo

85-222: Correlation & Regression
Sample Multiple Choice Questions
1. The equation of the regression line used in statistics is
A). x = a + by
B). y = bx + a
C). y = a + bx
D). x = ay + b
2. Compute the correlation coefficient for the data below
X values
5

85-222: Probability
1. If a menu has a choice of 5 appetizers, 4 main courses, and 5 desserts, then the sample space
for all possible dinners has how many outcomes?
A) 45
B) 100
C) 3
D) 25
2. A store manager wants to display 5 different brands of toothpas

85-222: Correlation & Linear Regression
Practice Computational Questions
1. Age and Exercise Hours A researcher wishes to determine if a person's age is related to the number
of hours he or she exercises per week. The data for the sample are shown here.
S

85-222: Normal Distribution
Sample Multiple Choice Questions
1. The average gas mileage of a certain model car is 28 miles per gallon. If the gas mileages are
normally distributed with a standard deviation of 1.7, find the probability that a car has a gas

85-222: Probability Distributions
Sample Multiple Choice Questions
1. What probability value would be needed to complete the following probability distribution?
x
-2
-1
0
1
2
P(x)
A) 0.24
B) 0.41
0.09
C) 0.76
0.23
0.15
0.29
D) 0.12
2. The failure rate for

The Use of Unmanned Air Vehicle
(UAVs) in the War on Afghanistan and
the War on Iraq
Mohammed Dayraki
104357965
Engineering, Military, & Society
06-88-590-10
Instructor:
Dr. Graham Reader
Leading Teaching Assistants:
Lorraine Grodin
Shouvik Dev
Kelvin Xie

Submarines Atmosphere
Control and Air Treatment
Mohammed Dayraki
104357965
Underwater Intervention Systems
06-88-590-38/92-590-64 F15
Instructor:
Dr. Graham Reader
Leading Teaching Assistants:
Marko Jeftic
Kelvin Xie
Department of Electrical Engineering,