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

Confidence interval for the mean.., How to start solving the null hypothesi...

How to start solving the null hypothesis that the mean daily caloric intake in the adult population of a rural county is 1800 calories. A sample of 400 had a mean of 1785 and SD 24

What is degrees of freedom, What is  Degrees of Freedom : While comparing ...

What is  Degrees of Freedom : While comparing the calculated value of X2 with the table value we have to determine the degrees of freedom. By degrees of freedom we mean the number

Sale of an asset on account of depreciation, Write a short note on Sale of ...

Write a short note on Sale of An Asset on account of Depreciation. Ans. An asset can be sold anytime before or after its useful life estimated time, in case the asset is sold more

Regression analysis, Regression line drawn as Y=C+1075x, when x was 2, and ...

Regression line drawn as Y=C+1075x, when x was 2, and y was 239. Given that y intercept was 11. Calculate the residual

Regresion analysis, If the regression line is drawn as Y = C + 1075x, when ...

If the regression line is drawn as Y = C + 1075x, when X was 2 and y was 239, given that the intercept was 11. Calculate the residual

Worksheet assignment help, Worksheet 5 Q1: For this question, use the p...

Worksheet 5 Q1: For this question, use the petrol consumption data from Worksheet 4, (included the data for worksheet 4)   8.9   10.4    6.3   8.9   10.8   10.8   8.2

Cost accounting, difference between financial statement and annual report ....

difference between financial statement and annual report .

Confidence interval, Ask quesA buffalo, your cola distributor is featuring ...

Ask quesA buffalo, your cola distributor is featuring a super-special sale on 12- packs. She wonders where in the grocery store to place the cola for maximum attention. Should it b

Explain accounting methods, Define various methods in accounting, specifica...

Define various methods in accounting, specifications and procedures.

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