# Quiz 3 mat500 | Mathematics homework help

Question 1

1.    Probability trees are used merely to calculate unlawful probabilities.

Answer

[removed]True

[removed]False

2 points

Question 2

1.    Seventy two percent of all observations droop amid 1 model gap of the medium if the facts is typically select.

Answer

[removed]True

[removed]False

2 points

Question 3

1.    If two events are not mutually unpopular, then P(A or B) = P(A) + P(B)

Answer

[removed]True

[removed]False

2 points

Question 4

1.    The Hurwicz type is a adjust among the minimax and minimin criteria.

Answer

[removed]True

[removed]False

2 points

Question 5

1.    Using the minimax lamentation type, we principal frame a consideration of lamentations. Subsequently, for each practicable judgment, we appear over the avows of sort and constitute a melody of the completion lamentation practicable for that judgment. We then glean the judgment delay the largest completion lamentation.

Answer

[removed]True

[removed]False

2 points

Question 6

1.    The correspondent coming type consigns a luck of 0.5 to each avow of sort, unmindful of how abundant avows of sort there are.

Answer

[removed]True

[removed]False

2 points

Question 7

1.    Both maximin and minimin criteria are optimistic.

Answer

[removed]True

[removed]False

2 points

Question 8

1.    The chi-square type is a statistical type to see if an observed facts fit a _________.

Answer

[removed]

Normal luck arrangement

[removed]

continuous luck arrangement

[removed]

particular luck arrangement

[removed]

All of the above

2 points

Question 9

1.    Assume that it captures a propaganda ward an medium of 5 minutes to perceive a parking discoloration in the ocean parking lot. Assume so that this span is typically select delay a model gap of 2 minutes. Perceive the luck that a randomly selected propaganda ward get capture among 2 and 6 minutes to perceive a parking discoloration in the ocean parking lot.

Answer

[removed]

0.1950

[removed]

0.4772

[removed]

0.4332

[removed]

0.6247

2 points

Question 10

1.    A adherupture would affect to localize the typical arrangement to consign grades such that 5% of wards take A's. If the exam medium is 62 delay a model gap of 13, what grade should be the cutoff for an A? (Round your counterpart.)

Answer

[removed]

80

[removed]

83

[removed]

90

[removed]

93

2 points

Question 11

1.    A duty possessor is trying to determine whether to buy, rupture, or lease calling-post boundlessness and has frameed the succeedingcited payoff consideration established on whether duty is spirited or dull.

The maximax policy is:

Answer

[removed]

Rent

[removed]

Buy

[removed]

Brisk

[removed]

Slow

2 points

Question 12

1.    The maximin type results in the

Answer

[removed]

insufficiency of the completion payoffs

[removed]

completion of the completion payoffs

[removed]

completion of the insufficiency payoffs

[removed]

insufficiency of the insufficiency payoffs

2 points

Question 13

1.    A assemblage of friends are artfulnessning a recreational jaunt and feel frameed the succeedingcited payoff consideration to succor them determine which ardor to agree in. Assume that the payoffs reproduce-exhibit their flatten of possession for each ardor beneath the sundry sphere conditions.

Weather
Cold Warm Rainy
S1 S2 S3
Bike: A1 10 8 6
Hike: A2 14 15 2
Fish: A3 7 8 9

What is the undestroyed judgment for this site?

Answer

[removed]

A1

[removed]

A2

[removed]

A3

[removed]

Any of the above

2 points

Question 14

1.    A assemblage of friends are artfulnessning a recreational jaunt and feel frameed the succeedingcited payoff consideration to succor them determine which ardor to agree in. Assume that the payoffs reproduce-exhibit their flatten of possession for each ardor beneath the sundry sphere conditions.

Weather
Cold Warm Rainy
S1 S2 S3
Bike: A1 10 8 6
Hike: A2 14 15 2
Fish: A3 7 8 9

If the assemblage prefers to minimize their completion lamentation, what ardor get they prefer?

Answer

[removed]

A1

[removed]

A2

[removed]

A3

[removed]

Any of the above

2 points

Question 15

1.    A mark of television has a vitalityspan that is typically select delay a medium of 7 years and a model gap of 2.5 years. What is the luck that a randomly separated TV get last past than 8 years? Note: Write your counterparts delay two places succeeding the decimal, rounding off as embezzle.

Answer [removed]

2 points

Question 16

1.    A vitality prophylactic order wants to update its actuarial considerations. Assume that the luck arrangement of the vitalitytimes of the participants is closely a typical arrangement delay a medium of 71 years and a model gap of 3.5 years. What adjustment of the artfulness participants are expected to see their 75th birthday? Note: Write your counterparts delay two places succeeding the decimal, rounding off as embezzle.

Answer [removed]

2 points

Question 17

1.    Consider the succeedingcited judgment tree.

What is the expected treasure for the best judgment? Round your counterpart to the rectilinear gross number.

Answer [removed]

2 points

Question 18

1.    A supervisor has patent clear a payoff consideration that indicates the produce associated delay a set of alternatives beneath 2 practicable avows of sort.

Alt S1 S2
1 10 2
2 -2 8
3 8 5
Compute the expected treasure of absolute notice assuming that the luck of S2 is correspondent to 0.4.

Answer [removed]

2 points

Question 19

1.    The peculiarity regulate supervisor for ENTA Inc. must determine whether to recognize (a1), prefer irritate (a2) or discard (a3) a lot of incoming symbolical. Assume the succeedingcited payoff consideration is beneficial. Historical facts indicates that there is 30% luck that the lot is moneyless peculiarity (s1), 50 % luck that the lot is impartial peculiarity (s2) and 20% luck that the lot is good-natured-natured peculiarity (s3).

What is the numerical treasure of the maximin?

Answer [removed]

2 points

Question 20

1.    A duty possessor is trying to determine whether to buy, rupture, or lease calling-post boundlessness and has frameed the succeedingcited payoff consideration established on whether duty is spirited or dull.

If the luck of spirited duty is .40, what is the numerical completion expected treasure?

Answer [removed]