normal distribution, Basic Statistics

Assignment Help:

Lifts usually have signs indicating their maximum capacity. Consider a sign in a lift that reads “maximum capacity 1400kg or 20 persons”. Suppose that the weights of lift-users are normally distributed with a mean of 65kg and a standard deviation of 10kg.

(a) What is the probability that a lift-user will weigh more than 70kg?

(b) What is the probability that a lift-user will weigh between 60 and 75kg?

(c) What is the probability that 20 people will exceed the weight limit of 1400kg?

(d) What is the probability that 25 people will not exceed the weight limit (Use Excel to
calculate probability to 6 decimal places)?

Related Discussions:- normal distribution

Stock control, Two components, A and B, are used as follows: normal usage -...

Two components, A and B, are used as follows: normal usage - 50 per week each minimum usage - 25 per week each maximum usage - 75 per week re-order quantity - A:300; B:500 re-order

Absorption overheads, Give a brief discussion of the existing traditional ...

Give a brief discussion of the existing traditional method of absorbing overheads

Amplification, Amplification is the process by which the magnitudes of the ...

Amplification is the process by which the magnitudes of the variable quantity is increasing, especially the magnitude of voltage, current or power, without changing any other quant

What is Appropriation , What is Appropriation A legal endorsement for an ...

What is Appropriation A legal endorsement for an organization to make expenses for particular requirements from particular options available or approximated to be available durin

How to calculate Median?, Median The median describes the value of the ...

Median The median describes the value of the middle term in data. The data set must be ranked first in increasing order before the middle value is identified. The median separa

Random variables, A Biology student estimates that the probability that a c...

A Biology student estimates that the probability that a certain organism will live beyond 24 hours is .40. If he conducts on 7 of this type or organisms, find the probability that

Peanuts and cost accounting, EFF EX: Joe, you said you put in these peanuts...

EFF EX: Joe, you said you put in these peanuts because some people ask for them, but do you realise what this rack of peanuts is costing you? JOE: It ain''t gonna cost. ''sgonna be

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd