Qnt 351 week 2 connect lab latest 2016 version


1.     The ruler of admissions at Kinzua University in Nova Scotia estimated the disposal of scholar admissions for the drop semester on the foundation of late experience

Admissions       Probability

1050                       0.5

1300                       0.2

1540                       0.3

a.         What is the foreseeed enumerate of admissions for the drop semester

b.         Abuse the strife and the flag disconnection of the enumerate of admissions(Round your flag disconnection to 2 decimal places.

 

 

2.     The Internal Revenue Service is con-overing the class of benign aids. A exemplification of 22 avail is chosen from puerile couples betwixt the ages of 20 and 35 who had an adjusted bloated pay of over than $100,000. Of these 22 avail, 7 had benign aids of over than $1,000. Suppose 6 of these avail are chosen for a large audit

a.     You should use the hypergeometric disposal is misapply. Because

b.    What is the presumption correspondently one of the six audited had a benign abatement of over than $1,000

c.     What is the presumption at averageest one of the audited avail had a benign aid of over than $1,000

 

3.     According to the "January plea," if the supply communicate is up for the month of January, it procure be up for the year. If it is down in January, it procure be down for the year. According to an name in The Wall Street Journal, this plea held for 27 out of the ultimate 34 years. Suppose there is no faithfulness to this plea; that is, the presumption it is either up or down is 0.5.    What is the presumption this could betide by chance          Round your confutation to 6 decimal places

 

 (for a binomial disposal delay 27 victory and presumption 0.5

 

4.     Customers experiencing technical inaptitude delay their internet cable hookup may allure an 800 enumerate for technical subsistence. It receives the technician betwixt 90 seconds and 14 minutes to instruct the gist. The disposal of this subsistence term follows the conformable disposal

a-     What are the appreciates for a and b in minutes? (Do not circular your interposed calculaions. Circular your confutations to 1 decimal place

b-1.What is the average term to instruct the gist? (Do not circular your interposed

calculations. Circular your confutation to 2 decimal places.

b-2 What is the flag disconnection of the term? (Do not circular your interposed calculations. Circular your confutation to 2 decimal places.)

c-.  What percent of the gists receive over than 5 minutes to instruct? (Do not circular your interposed calculations. Circular your confutation to 2 decimal places

d-   Suppose we wish to confront the average 50% of the gist-solving terms. What are the end points of these two terms? (Do not circular your interposed calculations. Circular your confutations to 3 decimal places.

 

 

5.     A natural population has a average of 20 and a flag disconnection of 4

a.     Compute the z appreciate associated delay 25

b.    What correlation of the population is betwixt 20 and 25

c.     What correlation of the population is near than 18

 

 

6.     Assume that the hourly absorb to act a retail airplane follows the natural disposal delay a average of $5,062 per hour and a flag disconnection of $392.  What is the unimpeded absorb for the definite 5% of the airplanes? (Round z appreciate to 2 decimal places and circular definite confutation to rectilinear all dollar

 

7.     The creator of a laser imprinter announces the average enumerate of pages a cartridge procure imimprint precedently it needs replacing is 12,425. The disposal of pages imprinted per cartridge closely follows the natural presumption disposal and the flag disconnection is 595 pages. The creator wants to contribute guidelines to virtual customers as to how hanker they can foresee a cartridge to ultimate

How frequent pages should the creator circulate for each cartridge if it wants to be correct 99 percent of the term? (Round z appreciate to 2 decimal places. Circular your confutation to the rectilinear all enumerate

 

8.     A con-over of hanker-distance phone allures made from General Electric Corporate Headquarters in Fairfield, Connecticut, biblical the protraction of the allures, in minutes, follows the natural presumption disposal. The average protraction of term per allure was 5.10 minutes and the flag disconnection was 0.40 minutes

a.     What concern of the allures ultimate betwixt 5.10 and 5.80 minutes? (Round z-score deduction to 2 decimal places and your definite confutation to 4 decimal places

b.    What concern of the allures ultimate over than 5.80 minutes? (Round z-score deduction to 2 decimal places and your definite confutation to 4 decimal places

c.     What concern of the allures ultimate betwixt 5.80 and 6.50 minutes? (Round z-score deduction to 2 decimal places and your definite confutation to 4 decimal places

d.    What concern of the allures ultimate betwixt 4.50 and 6.50 minutes? (Round z-score deduction to 2 decimal places and your definite confutation to 4 decimal places.

e.     As sunder of her announce to the chairman, the ruler of communications would affect to announce the protraction of the hankerest (in prolongation) 3 percent of the allures. What is this term? (Round z-score deduction to 2 decimal places and your definite confutation to 2 decimal places.

 

9.     A population consists of the subjoined five appreciates: 10, 13, 16, 19, and 21

a.     List all exemplifications of extent 3, and abuse the average of each exemplification. (Round your average appreciate to 2 decimal places.

b.    Compute the average of the disposal of exemplification averages and the population average. (Round your confutations to 2 decimal places

 

 

 

10.  The average age at which men in the United States espouse for the foremost term follows the natural disposal delay a average of 24.7 years. The flag disconnection of the disposal is 2.8 years

For a stray exemplification of 60 men, what is the affectlihood that the age at which they were married for the foremost term is near than 25.2 years

 

 

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