In choosing the number of client support agents to employ and in arranging their timetables, a

firm that markets lawnmowers examines fix times pinnacle the machines. One such investigation uncovered

that maintenance times have an around dramatic circulation with a mean of a day and a half.

a Find the likelihood that a haphazardly chosen fix time will be under 10 minutes.

b The charge for lawnmower fixes is S60 pinnacle every half hour (or part thereof) peak work. What is

the likelihood that a maintenance occupation will bring about a charge for work of S120?

c In arranging plans, how long should the firm take into account each maintenance to guarantee that the

possibility of any one fix time surpassing this permitted time is just 0.01 ?

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For every month, the day by day precipitation (in mm) recorded at the Goztepe precipitation station in the Asian

part of Istanbul from 1961 to 1990 was demonstrated well utilizing a gamma circulation (Aksoy 2000).

In any case, the boundaries varied extraordinarily from one month to another. For September, a = 0.4

also, = 20. Track down the accompanying.

a The mean and standard deviation ot precipitation during a haphazardly chosen September day at this

station

b A span that will incorporate the every day precipitation for a haphazardly chosen September day witn a

likelihood of in any event 0.75

c Compare the outcomes for September and June.

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A populace regularly increments in size until it arrives at some balance wealth. Notwithstanding: ifthe

populace grov.tn of a specific creature is obsetued pinnacle various populaces, the populaces

are not all the very same size when they arrive at the balance. Rather the size vacillates

about some normal size. Dennis and Costantino (1988) recommended the gamma conveyance as a

model ofthe balance populace size. When considering the flour bug Triboijum castaneum,

the gamma conveyance with boundaries a = 5.5 and = 5 gave a decent model to these

harmony populace sizes.

a Find the mean and fluctuation of the balance populace size peak the flour creepy crawly.

b Find a span that will incorporate in any event 75% of the harmony populace sizes of this flour

creepy crawly.