MBA 613 BUSINESS PRINCIPLES II
WEEK 7 FINAL EXAM 2025/2026
QUESTIONS AND ANSWERS 100% PASS
The incubation time for Rhode Island Red chicks is normally distributed with mean of 22days
and standard deviation of approximately 3 days. If 1000 eggs are being incubated, how many
chicks do we expect will hatch in 19 to 28 days? - ANS 819 chicks
Find the area under the standard normal curve over the interval specified below.Between z = -2
and z = 1.2 - ANS 0.862
Suppose that more than a decade ago high levels of lead in the blood put 82% of children at
risk. A concerted effort was made to remove lead from the environment. Suppose, according to
a survey, only 9% of children in the United States are at risk of high blood-lead levels. In a
random sample of 100 children taken more than a decade ago, what is the probability that 70
or more had high blood-lead levels? - ANS 1.000
John runs a computer software store. He counted 120 people who walked by his store in aday,
50 of whom came into the store. Of the 50, only 21 bought something in the store.Estimate the
probability that a person who walks by the store will come in and buysomething. Round your
answer to the nearest hundredth. - ANS 0.18
Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable
representing annual percent return for the Vanguard Total Stock Index (all Stocks). Let y be a
random variable representing annual return for the Vanguard Balanced Index (60% stock and
40% bond). For the past several years, assume the following data. Compute .
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, x:
15
0
38
24
31
26
27
-15
-15
-24
y:
10
-3
27
18
25
18
18
-3
-4
-10 - ANS 2,560
Seven wires (all with different colors) need to be attached to a circuit board. A robotic device
will attach the wires. The wires can be attached in any order, and the production manager
wishes to determine which order would be fastest for the robot to use. Use the multiplication
rule of counting to determine the number of possible sequences of assembly that must be
tested. - ANS 5,040
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
WEEK 7 FINAL EXAM 2025/2026
QUESTIONS AND ANSWERS 100% PASS
The incubation time for Rhode Island Red chicks is normally distributed with mean of 22days
and standard deviation of approximately 3 days. If 1000 eggs are being incubated, how many
chicks do we expect will hatch in 19 to 28 days? - ANS 819 chicks
Find the area under the standard normal curve over the interval specified below.Between z = -2
and z = 1.2 - ANS 0.862
Suppose that more than a decade ago high levels of lead in the blood put 82% of children at
risk. A concerted effort was made to remove lead from the environment. Suppose, according to
a survey, only 9% of children in the United States are at risk of high blood-lead levels. In a
random sample of 100 children taken more than a decade ago, what is the probability that 70
or more had high blood-lead levels? - ANS 1.000
John runs a computer software store. He counted 120 people who walked by his store in aday,
50 of whom came into the store. Of the 50, only 21 bought something in the store.Estimate the
probability that a person who walks by the store will come in and buysomething. Round your
answer to the nearest hundredth. - ANS 0.18
Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable
representing annual percent return for the Vanguard Total Stock Index (all Stocks). Let y be a
random variable representing annual return for the Vanguard Balanced Index (60% stock and
40% bond). For the past several years, assume the following data. Compute .
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, x:
15
0
38
24
31
26
27
-15
-15
-24
y:
10
-3
27
18
25
18
18
-3
-4
-10 - ANS 2,560
Seven wires (all with different colors) need to be attached to a circuit board. A robotic device
will attach the wires. The wires can be attached in any order, and the production manager
wishes to determine which order would be fastest for the robot to use. Use the multiplication
rule of counting to determine the number of possible sequences of assembly that must be
tested. - ANS 5,040
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
