EGR 1400 FINAL EXAM QUESTIONS AND
ANSWERS 100% CORRECT!!
40 ohms - ANSWER Two resistors R1 and R2 are in parallel. If R1 = R2 = 80 ohms,
what is the equivalent resistance if these two resistors were combined into one?
10 - ANSWER In the circuit below, the resistance Rab is equal to___?
circuit har a 6 ohm resistor in series with an 8 ohm resistor that is parallel to another 8
ohm resistor
5.1 - ANSWER A Detroit Lions football player kicks a football at an angle of 30º and a
velocity of 20 meters per second. How high will the ball go (in meters from the ground)?
14.5, window - ANSWER In a desperate attempt to get Juliet's attention, Romeo (who is
6 foot tall) throws a rock from 1 foot above his head at an angle of 45º with a velocity of
22 meters per second. Assuming that the rock hits the center of the window when it has
reached it's highest point, how high is the window (the center of the window, in meters)?
If Juliet, who just caught a glimpse of Romeo picking up the rock, excitedly ran to the
window and opened it 2 seconds after Romeo threw the rock, would the rock hit the
window or Juliet?
13.04% - ANSWER (Poisson distribution) Depending on the color of car you purchase,
you may be at a higher risk for getting a speeding ticket. For Porsche's, a black car
typically gets 1.4 speeding tickets, a white car typically gets 1.2 speeding tickets, and a
red car typically gets 3.2 speeding tickets over a year period. If you purchased a red
Porsche, what's the probability of getting exactly one speeding ticket?
d - ANSWER A company that makes toy Elmo dolls has a chief inspector named
Vrisken. In three hours, an average of 2 (two) crates of dolls are rejected because they
contain more than 4 randomly inspected faulty dolls (bad smell, discolored, doesn't
speak, swears, etc...). What is the probability of less than 2 crates of Elmo dolls being
rejected in a three-hour period? (Assume that this plant operates 24 hours per day, 7
days per week).
,a.
1.83 %
b.
27.07 %
c.
16.48 %
d.
None of these
e.
13.53 %
6/36 - ANSWER What is the probability of rolling a total of 7 (seven) on a pair of
standard dice?
27.78% - ANSWER What is the probability of rolling a total of 5 (five) on a pair of dice
with these sides:
(1, 1, 2, 3, 4, 4)?
95% - ANSWER What percentage of candidates have an age between 21 and 29 years
from a group of people with normally distributed ages with an average age of 25 years
old and a standard deviation of 2 years?
b - ANSWER Calculate the standard deviation for the data set: 1, 2, 2, 4, 7
a.
4.77
b.
None of these
c.
2.81
d.
3.20
e.
2.39
a - ANSWER In C#, you can simulate rolling two dice by selecting a random number
between 1 and 6 to represent each die roll and then adding them together to get the
dice total. Let's say that we developed a program to do this and we rolled the pair of
dice 50 times and recorded the results of each roll on a sheet of paper. Instead of using
two die separately and totaling them (which would result in a total between 2 and 12),
can we just select one random number between 2 and 12 and achieve the same
experimental results for the 50 rolls as rolling two die and adding them?
, a.
No, it's not possible to get the same experimental results with one random number
b.
Yes, using the same scaling as before
c.
Yes, if the Visual C# code is written to scale the single random number between 2 and
12
d.
Yes, if the random number is selected using myRand.Next(2,13);
the Text property - ANSWER What property of a Label control would you need to set to
change the words displayed in the Label on the form?
an event - ANSWER When the user clicks a button, _________ is raised.
d. RandNum=myRand.Next(1,4); - ANSWER Which of the following statements will set
RandNum to a value between 1 and 3, inclusive?(myRand has been declared as new
Random)
a.
RandNum = myRand.Next(1,3);
b.
RandNum = myRand.Next(0,4);
c.
RandNum = myRand.Next(0,3);
d.
RandNum = myRand.Next(1,4);
3.80 - ANSWER What is the value of float.Parse("3.8").ToString("0.00")?
400500 - ANSWER What does the following expression result in:
txtText1.Text = txtSalary.Text + txtBonus.Text + txtOvertime.Text;
Given that the values entered for txtSalary is 400, txtBonus is 50 and txtOvertime is 0
int a, b; - ANSWER declare but don't initialize the variables a and b as type Integer
18.33 - ANSWER When a=9 and b=3, what is the result of the expression:
a+b/a+b*b?
ANSWERS 100% CORRECT!!
40 ohms - ANSWER Two resistors R1 and R2 are in parallel. If R1 = R2 = 80 ohms,
what is the equivalent resistance if these two resistors were combined into one?
10 - ANSWER In the circuit below, the resistance Rab is equal to___?
circuit har a 6 ohm resistor in series with an 8 ohm resistor that is parallel to another 8
ohm resistor
5.1 - ANSWER A Detroit Lions football player kicks a football at an angle of 30º and a
velocity of 20 meters per second. How high will the ball go (in meters from the ground)?
14.5, window - ANSWER In a desperate attempt to get Juliet's attention, Romeo (who is
6 foot tall) throws a rock from 1 foot above his head at an angle of 45º with a velocity of
22 meters per second. Assuming that the rock hits the center of the window when it has
reached it's highest point, how high is the window (the center of the window, in meters)?
If Juliet, who just caught a glimpse of Romeo picking up the rock, excitedly ran to the
window and opened it 2 seconds after Romeo threw the rock, would the rock hit the
window or Juliet?
13.04% - ANSWER (Poisson distribution) Depending on the color of car you purchase,
you may be at a higher risk for getting a speeding ticket. For Porsche's, a black car
typically gets 1.4 speeding tickets, a white car typically gets 1.2 speeding tickets, and a
red car typically gets 3.2 speeding tickets over a year period. If you purchased a red
Porsche, what's the probability of getting exactly one speeding ticket?
d - ANSWER A company that makes toy Elmo dolls has a chief inspector named
Vrisken. In three hours, an average of 2 (two) crates of dolls are rejected because they
contain more than 4 randomly inspected faulty dolls (bad smell, discolored, doesn't
speak, swears, etc...). What is the probability of less than 2 crates of Elmo dolls being
rejected in a three-hour period? (Assume that this plant operates 24 hours per day, 7
days per week).
,a.
1.83 %
b.
27.07 %
c.
16.48 %
d.
None of these
e.
13.53 %
6/36 - ANSWER What is the probability of rolling a total of 7 (seven) on a pair of
standard dice?
27.78% - ANSWER What is the probability of rolling a total of 5 (five) on a pair of dice
with these sides:
(1, 1, 2, 3, 4, 4)?
95% - ANSWER What percentage of candidates have an age between 21 and 29 years
from a group of people with normally distributed ages with an average age of 25 years
old and a standard deviation of 2 years?
b - ANSWER Calculate the standard deviation for the data set: 1, 2, 2, 4, 7
a.
4.77
b.
None of these
c.
2.81
d.
3.20
e.
2.39
a - ANSWER In C#, you can simulate rolling two dice by selecting a random number
between 1 and 6 to represent each die roll and then adding them together to get the
dice total. Let's say that we developed a program to do this and we rolled the pair of
dice 50 times and recorded the results of each roll on a sheet of paper. Instead of using
two die separately and totaling them (which would result in a total between 2 and 12),
can we just select one random number between 2 and 12 and achieve the same
experimental results for the 50 rolls as rolling two die and adding them?
, a.
No, it's not possible to get the same experimental results with one random number
b.
Yes, using the same scaling as before
c.
Yes, if the Visual C# code is written to scale the single random number between 2 and
12
d.
Yes, if the random number is selected using myRand.Next(2,13);
the Text property - ANSWER What property of a Label control would you need to set to
change the words displayed in the Label on the form?
an event - ANSWER When the user clicks a button, _________ is raised.
d. RandNum=myRand.Next(1,4); - ANSWER Which of the following statements will set
RandNum to a value between 1 and 3, inclusive?(myRand has been declared as new
Random)
a.
RandNum = myRand.Next(1,3);
b.
RandNum = myRand.Next(0,4);
c.
RandNum = myRand.Next(0,3);
d.
RandNum = myRand.Next(1,4);
3.80 - ANSWER What is the value of float.Parse("3.8").ToString("0.00")?
400500 - ANSWER What does the following expression result in:
txtText1.Text = txtSalary.Text + txtBonus.Text + txtOvertime.Text;
Given that the values entered for txtSalary is 400, txtBonus is 50 and txtOvertime is 0
int a, b; - ANSWER declare but don't initialize the variables a and b as type Integer
18.33 - ANSWER When a=9 and b=3, what is the result of the expression:
a+b/a+b*b?
