Finite Math (20 Question) essay

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QUESTION 1
The befoulment dispensation of a aimless shifting X is

x–2–1012P ( X = x )
Compute the balance, difference, and flag flexion of X.
a.
b.
c.
d.
1 points

QUESTION 2

A befoulment dispensation has a balance of 57 and a flag flexion of 1.4. Use Chebychev’s disproportion to experience the believe of c that guarantees the befoulment is at lowest 96% that an conclusion of the trial lies betwixt 57 – c and 57 – c. (Round the exculpation to direct well calculate.)
a.3
b.9
c.1
d.7
e.5
1 points

QUESTION 3
Experience the difference of the befoulment dispensation coercion the histogram:

a.Var ( X) = 4.2625
b.Var ( X) = 4.65
c.Var ( X) = 4.28
d.Var ( X) = 4.0125
1 points

QUESTION 4
The birthrates in the kingdom coercion the years 1981-1990 are:

Year1981198219831984198519861987198819891990Birthrate15.915.515.515.715.715.615.715.916.216.7
(The birthrate is the calculate of feed births/1,000 population.)

Compute the balance, difference, and flag flexion of the aimless shifting X.
a.
b.
c.
d.
1 points

QUESTION 5
Rosa Walters is regarding investing $10,000 in two interchangeable stocks. The anticipated avail from worth view and dividends (in hundreds of dollars) are picturesquely by the aftercited befoulment dispensations:

Interchangeable Stock A

ReturnsProbability-40.280.3100.5
Interchangeable Stock B

ReturnsProbability-20.260.680.2
Compute (in dollars) the balance and difference coercion each interchangeable stock.
a. Interchangeable Stock A:
Interchangeable Stock B:
b. Interchangeable Stock A:
Interchangeable Stock B:
c. Interchangeable Stock A:
Interchangeable Stock B:
d. Interchangeable Stock A: Interchangeable Stock B:
1 points

QUESTION 6
The calculate of Americans outside heartiness protection, in millions, from 1995 through 2002 is summarized in the aftercited consultation.

Year19951996199719981999200020012002Americans40.541.443.644.740.239.241.143
What is the flag flexion of Americans outside heartiness protection in the era from 1995 through 2002?

a. million
b. million
c. million
d. million
e. million
1 points

QUESTION 7
The balance annual starting stipend of a innovating furrow in a infallible vocation is $43,000 with a flag flexion of $500. What is the befoulment that the starting stipend of a innovating furrow in this vocation conquer be betwixt $39,500 and $46,500?
a.At lowest
b.At lowest
c.At lowest
d.At lowest
1 points

QUESTION 8
A contemplate was conducted by the traffic exploration branch of the National Real Estate Company unmoulded 500 prospective buyers in a comprehensive metropolitan area to determine the apex worth a prospective buyer would be conquering to steadfast coercion a issue. From the postulates unmoved, the dispensation that follows was obtained.

Compute the flag flexion of the apex worth (in thousands of dollars) that these buyers were conquering to steadfast coercion a issue. Round the exculpation to the direct integer.

Apex Worth Considered, 150160170180190220250270320

a.
b.
c.
d.
e.
1 points

QUESTION 9
The aftercited consultation gives the jaws of 30 students in a mathematics scrutiny.

Scores90-9980-8970-7960-6950-59Students381351
Experience the balance and the flag flexion of the dispensation of the ardent postulates. Hint: Assume that complete jaws untrue among a cluster space-betwixt catch the midbelieve of that cluster.
a.
b.
c.
d.
e.
1 points

QUESTION 10
A befoulment dispensation has a balance of 45 and a flag flexion of 1. Use Chebychev’s disproportion to believe the befoulment that an conclusion of the trial lies betwixt 43 and 47.
a.At lowest 0.8
b.At lowest 0.75
c.At lowest 0.5
d.At lowest 0.25
e.At lowest 0.04

Two

QUESTION 1
Experience the believe of the befoulment of the flag regular shifting Z similar to the retired area lower the flag regular deflexion.

P ( – 1.36 < Z < 1.75 )

a.P (- 1.36 < Z < 1.75 ) = 0.0869
b.P (- 1.36 < Z < 1.75 ) = 0.8730
c.P (- 1.36 < Z < 1.75 ) = 0.9599
d.P (- 1.36 < Z < 1.75 ) = 1.0468
1 points

QUESTION 2
Suppose X is a regular aimless shifting with and . Experience the believe of .
a.0.9050
b.0.8996
c.0.8945
d.0.8818
e.0.9857
1 points

QUESTION 3
Experience the believe of the befoulment of the flag regular shifting Z similar to this area.

P ( Z > 2.31 )

a.P ( Z > 2.31 ) = 0.0084
b.P ( Z > 2.31 ) = 0.0104
c.P ( Z > 2.31 ) = 0.0136
d.P ( Z > 2.31 ) = 0.9896
1 points

QUESTION 4
Suppose X is a regular aimless shifting with and . Experience the believe of .
a.0.498
b.0.726
c.0.495
d.0.4333e.0.72
1 points

QUESTION 5
Experience the believe of the befoulment of the flag regular shifting Z similar to the retired area lower the flag regular deflexion.

P ( 0.3 < Z < 1.85 )

a.P (0.3 < Z < 1.85 ) = 0.3499
b.P (0.3 < Z < 1.85 ) = 1.5857
c.P (0.3 < Z < 1.85 ) = 0.9678
d.P (0.3 < Z < 1.85 ) = 0.6179

Three

QUESTION 1
According to postulates released by the Chamber of Commerce of a infallible city, the weekly hire (in dollars) of feminine factory workers are regularly distributed with a balance of 575 and a flag flexion of 50. Experience the befoulment that a feminine factory worker separated at aimless from the city makes a weekly wage of $550 to $625.

​a.The befoulment is 0.5438.
b.The befoulment is 0.5328.
c.The befoulment is 0.4297.
d.The befoulment is 0.5339.
1 points

QUESTION 2
To be desirable coercion raise importance, applicants coercion infallible Civil Service positions must earliest by a written qualifying scrutiny on which a jaw of 70 or over must be obtained. In a new-fangled scrutiny it was establish that the jaws were regularly distributed with a balance of 67 points and a flag flexion of 6 points. Determine the percentage of applicants who byed the written qualifying scrutiny.​

a.18.79% applicants byed the written qualifying scrutiny.
b.19.52% applicants byed the written qualifying scrutiny.
c.30.85% applicants byed the written qualifying scrutiny.
d.24.74% applicants byed the written qualifying scrutiny.
1 points

QUESTION 3
Use the divert regular dispensation to border the resulting binomial dispensation.

The director of Madison Finance Company has believed that, owing of a recession year, 5% of its 400 mortgage accounts conquer be offender. If the director’s believe is rectify, what is the befoulment that 11 or over of the accounts conquer be offender?
a.The befoulment is 0.9994.
b.The befoulment is 0.9891.
c.The befoulment is 0.8137.
d.The befoulment is 0.9854.
1 points

QUESTION 4
Use the divert regular dispensation to border the resulting binomial dispensation.

A basketbcomplete player has a 75% befoulment of making a open fling. What is the befoulment of her making 80 or over open flings in 120 trials?
a.The befoulment is 0.9744.
b.The befoulment is 0.9822.
c.The befoulment is 0.9864.
d.The befoulment is 0.9898.
1 points

QUESTION 5
Use the divert regular dispensation to border the resulting binomial dispensation.

Colorado Mining and Mineral has 800 employees affianced in its mining operations. It has been believed that the befoulment of a worker contravention with an garb during a 1-year era is .1. What is the befoulment that over than 80 workers conquer encounter with an garb during the 1-year era?
a.The befoulment is 0.4684.
b.The befoulment is 0.4669.
c.The befoulment is 0.8491.
d.The befoulment is 0.4761.

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