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

Measure of dispersion, What are the applications of measure of dispersion i...

What are the applications of measure of dispersion in civil engineering?

Compute the value of beta - simple linear regression , Simple Linear Regres...

Simple Linear Regression One measure of the risk or volatility of an individual stock is the standard deviation of the total return (capital appreciation plus dividends) over

Statistics question, 1. A sample from 16 different farms across Quebec show...

1. A sample from 16 different farms across Quebec shows that the hay production in bales per acre is normally distributed N(100,50). a. (2p )What is the probability that a random

Autocorrelation, at what p-value do we reject the null hypothesis for the D...

at what p-value do we reject the null hypothesis for the Dublin-Watson test

Define Agency solutions , Define Agency solutions Every condition agency,...

Define Agency solutions Every condition agency, office, board, commission, department, condition organization, or condition organization of degree, which includes all condition u

Probability, a survey of grocery revealed 40 percent had a pharmacy, 50 per...

a survey of grocery revealed 40 percent had a pharmacy, 50 percent had a floral shop, and70 percent had a deli. suppose 10 percent of the stores have all three departments, 30 perc

Determine the coefficient of determination, 1. A researcher was interested ...

1. A researcher was interested lowering the high school dropout level in his county. He measured the reading level of students entering middle school (based on a standard test) and

Accounting for partnerships and limited liability companies, Singer & Mcman...

Singer & Mcmann are partners in business. Singer''s original capital was $40,000 and Mcmann''s was $60.000. They agree to salaries of $12,000 and $18,00 respectively and 10% inte

Ch 7 , .A study of long term phone calls made from general electricss corpo...

.A study of long term phone calls made from general electricss corporate headquarters in fairfeild, conneticuit, revealed the length of the calls, in minutes follows the normal pro

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