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

Track Software, Seven years ago, after 15 years in public accounting, Stanl...

Seven years ago, after 15 years in public accounting, Stanley Booker, CPA, resigned his posiition as Manager of Cost Systems for Davis, Cohen, and O''''Brien Public Accountants and

Amp-amplification law, Amp-amplification law The job of an amplifier is o...

Amp-amplification law The job of an amplifier is obviously to amplify, but the law it abides by isn’t so simple. Ultimately, the amplifier is comparable to a valve, in the sense

Multiple linear regression, #multiple linear regression of y on x1 & x2 fro...

#multiple linear regression of y on x1 & x2 from data relating to 3 variables i.e y=4,6,77,9,13,15 x1=15,12,8,6,4,8 x2=30,24,20,14,10,4

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

Accounting problem, a business was started on January 1, 2011 and $1000 of ...

a business was started on January 1, 2011 and $1000 of supplies to use in the business. At the end of the month 25% of the supplies remains unpaid and 20% are still on hand. what a

Estimate the cost of producing, Consider the manufacturing system presented...

Consider the manufacturing system presented in the article by Yu and Bricker (1993). The management would like to purchase new machine tools more reliable and more high accuracy

Cash discount., Cash discount A payment received, given if payment is comp...

Cash discount A payment received, given if payment is completed within a stated age of occasion, Refer to TRADE DISCOUNT,

Compute the maximum standard deviation, The specification for a plastic han...

The specification for a plastic handle calls for a length of 6.0 inches ± 0.5 inches (5.5 to 6.5 inches). The process is known to operate at a mean thickness of 6.1 inches.  The mi

Factor anaylsis statistical method , First of all, thank you very much for ...

First of all, thank you very much for your help. I have a mixes data base, categorial variable, liclekt scale on 5 and 4, and continous variable, and several dummy. I would need h

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