maths aid needed u will be rewarded! Watch

rishi08
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#1
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#1
An insurance company knows from previous records that the probability of
a person in a particular age-group dying in the next year is 0.7.
It has 23 policy holders who fall into this age range. What is the probability that
the company will receive the following number of claims in the next year as a result
of deaths within this group?
Give your answers to 2 decimal places
ev
(a) more than one claim 1 mark

(b) less than 7 claims 1 mark

(c) exactly 4 claims 1 mark

(d) 3 to 5 claims inclusive 2 marks
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SCE1912
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Let X be the number of deaths in the group
What distribution do you think X will have (given certain assumptions)?
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LozengeC
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Is this binomial? If so you could use the tables? Or is that only when you're disproving a hypothesis? Or is that T-test? I only did stats 2 years ago, you think I'd still remember! :p:
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rishi08
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(Original post by SCE1912)
Let X be the number of deaths in the group
What distribution do you think X will have (given certain assumptions)?
um i have no idea, its a q from distributions and im reely struggling and i gotta do it by today lol, save me!
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rishi08
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(Original post by LozengeC)
Is this binomial? If so you could use the tables? Or is that only when you're disproving a hypothesis? Or is that T-test? I only did stats 2 years ago, you think I'd still remember! :p:
yea i got the tables, but what would i be lookin for on the tables, i have no clue at all! plzzz help
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silent ninja
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What kind of distribution do you think it is?
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rishi08
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um normal? binonom?
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