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

What is the minimax regret and probabillity, Flifla sells tomatoes every da...

Flifla sells tomatoes every day in Suk al Marqazi, the downtown fruit and vegetable market. He finds that he can order tomatoes in crates of 25 kg and he is able to stock a maximum

Measures of dispersion, if a series of three observations has a mean andd m...

if a series of three observations has a mean andd median of 4 and mean absolute deviation of 4/3. what is the series

Advantages of ifrs over the other accounting standards, IFRS has a lot of a...

IFRS has a lot of advantages over the other accounting standards - Provides consistency Ensures better comparability across organizations across the globe Decreases the c

Calculate maximize total profit next quarter, Please show your work to rece...

Please show your work to receive credit for this question.. Harkin Electronics is planning its production next quarter for its two product lines, relays and capacitors.  The pro

Surveys by mailing of questionnaires, The researcher and the respondents d...

The researcher and the respondents do not come in contact with each other if this method of survey is adopted Questionnaires are mailed to the respondents with a request to re

Interpret predictability and behaviou, Shafts are cut to length by two mach...

Shafts are cut to length by two machines, A and B. Each machine cuts 50 percent of all shafts in approximately the same amount of time. Machine A''s shafts are all good, but Machin

Calculate npv and irr of the project, PolyCorp is considering an investment...

PolyCorp is considering an investment in new plant of $3 million.  The project will be financed with a loan of $2,000,000 which will be repaid over the next five years in equal ann

Atomistic fallacy, Atomistic fallacy The fallacy which arises because of...

Atomistic fallacy The fallacy which arises because of the association amongst the two variables at the individual level might differ from the association between the similar two

LINEAR REGRESSION, Y=C+1075x,when x was 2, and y was 239, given that y inte...

Y=C+1075x,when x was 2, and y was 239, given that y intercept was 11. calculate the residual.

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