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

Statistical inference, A study was conducted at a major north-eastern Ameri...

A study was conducted at a major north-eastern American medical centre regarding blood cholesterol levels and heart-attack incidents. A total of 28 heart-attack patients had their

Probability and stochastic process, In a quaternaryphase shift keying (QPSK...

In a quaternaryphase shift keying (QPSK) communications system, one of four equally probable symbols s0,...,s3 is transmitted in T seconds. If symbol si is sent, a waveform x(t,si)

reading and display data-affine relation, We start reading and display the...

We start reading and display the data: library (UsingR) data(galileo) g2=galileo$init.h-500 gl=galileo$h.d par(bg='cornsilk') plot(gl,g2,pch=20,col="red",cex=2,yl

Basis of accounting, Basis of accounting This represents the technique and...

Basis of accounting This represents the technique and time of when income and costs or costs are acknowledged in the records and revealed in the fiscal reports. Talk about ACCRUAL

Comparing Two Samples, Ask qComparing Two Samples: 1. Apply the function "p...

Ask qComparing Two Samples: 1. Apply the function "plot" to the formula that relates the response "frequency" to the explanatory variable "march2007" in order to produce the two bo

Statistic for business, Present the survey methodology which is going to be...

Present the survey methodology which is going to be used by describing primary and secondary data collection methods, population, sampling frame and sampling method/s, sample size

Homework, The probability a computer will boot is .08. What is the least nu...

The probability a computer will boot is .08. What is the least number needed so that the probability at least two will boot is greater than .99?

Degree of tastiness, A researcher is interested in comparing tastiness of d...

A researcher is interested in comparing tastiness of different parts of cheese in grilled cheese sandwiches.  The researcher expects that Cheddar cheese grilled sandwiches are rate

Accounting is an art of recording, Accounting is an art of recording Yes...

Accounting is an art of recording Yes, we recognize upon that declaration because if we evaluate the primary features of the accounting program we will find that primary three p

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