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

Define tension and stress, Tension: When a sequence, place, cable or a man ...

Tension: When a sequence, place, cable or a man is presented tight, the ends of the sequence or place (or wire) pull on whatever systems are connected to them towards the sequence.

Kolmogorov test, how can i get a free software to run a kolmogorov test?

how can i get a free software to run a kolmogorov test?

Limitation of the accounting, Limitation of the Accounting. It informati...

Limitation of the Accounting. It information only accounting purchase, it is restricted to the accounting purchase only, and for example other elements which are not having any

State the model and apply t-test, Studies have linked brain size in infants...

Studies have linked brain size in infants and toddlers to a number of future ailments, including autism. One study looked at the brain sizes of 30 autistic boys and 12 nonautistic

Probability, The monthly income of a company employee is normally distribut...

The monthly income of a company employee is normally distributed with the mean Rs. 20,000 and standard deviation of Rs. 5000. a) Find the probability that an employee earns more th

Linear power supply, Linear Power Supply Uses a transformer to convert volt...

Linear Power Supply Uses a transformer to convert voltage from the mains (wall outlet) to a different voltage. With a transformer present, almost any voltage can be obtained. If a

Find the pv of the depreciation tax, PC Shopping Network may upgrade its mo...

PC Shopping Network may upgrade its modem pool. It last upgraded 2 years ago, when it spent $115 million on equipment with a life of 5 years and a salvage value of $15 million. The

Construct confidence interval for the true mean return, A researcher has ga...

A researcher has gathered data on the daily returns on a portfolio of call options over a recent 250-day period. The mean daily return has been 0.001 and the sample standard deviat

Statistics, Question 1 A courier company conducted a brainstorming sessio...

Question 1 A courier company conducted a brainstorming session amongst drivers to ascertain the reasons why it was unable to deliver items to households, always right first time.

Frequency distribution, What happens to the arithmetic mean when you add th...

What happens to the arithmetic mean when you add the same number to all the scores of the distribution?

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