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

Revenue recognition assigment, When selling books through insaltalments and...

When selling books through insaltalments and internet, what is an alternative selling method for better revenue recording?

Find the probability density function, The lifetime T (in days) of an elect...

The lifetime T (in days) of an electrical component has reliability function given by: R(t) = e - 0 : 01 t for time t > 0. An electrical system consists of four such component

Valuing preferred stock, Gesto, Inc., has an issue of preferred stock outst...

Gesto, Inc., has an issue of preferred stock outstanding that pays a $4.50 dividend every year, in perpetuity. If this issue currently sells for $79.85 per share, what is the requi

one-way anova and hypothesis , Suppose we wanted to compare the somatic co...

Suppose we wanted to compare the somatic complaints (as measured on a scale known as the Physical Symptom Survey or PSS) of three groups of people; nonsmokers, smokers, and people

T distribution, t distribution has proportionately smaller areas in its tai...

t distribution has proportionately smaller areas in its tail than normal distribution. is it true?

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

Correlation, difference between positive and negative correlaiton

difference between positive and negative correlaiton

Biostatistics, when testing hypothesis is the level of significanc the type...

when testing hypothesis is the level of significanc the type error I?

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