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

Sampling Error, Use the concepts of sampling error and z scores to explain ...

Use the concepts of sampling error and z scores to explain the concept of distribution of sample means.

Assignment., Introduce the aim of this section of the report including an e...

Introduce the aim of this section of the report including an explanation of the data to be analysed. • Use Excel to produce a box and whisker plot for the two sets of booking data

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

.., what is probabality

what is probabality

Time series , what is the importance of time series

what is the importance of time series

Dr. s.n.de, uses of time series with example

uses of time series with example

Multi stage sampling, Multi stage Sampling: This is a further development o...

Multi stage Sampling: This is a further development of cluster sampling. This techniques is meant for big inquiries extending to a considerably large l geographical area like an en

Why is an increase in inventory shown as a negative amount?, Why is an incr...

Why is an increase in inventory shown as a negative amount? A rise in stock indicates that a company has purchased more goods than it has sold. Increasing stock requires a money

Wae optic, can we polarize sunlight by the help of Polaroid disc?

can we polarize sunlight by the help of Polaroid disc?

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