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

HYPOTHESIS TESTING, The fluctuations in the stock market induce some invest...

The fluctuations in the stock market induce some investors to sell and move their money into more stable investments. To determine the degree to which recent fluctuation affected o

Test of hypothesis, A toothpaste company wants to know if its new products ...

A toothpaste company wants to know if its new products increases the length of time in between dentists visits for its uses. The company sets a target of 180 days to determine if i

Hypothesis testing, a clinical psychologist claims that on average, at leas...

a clinical psychologist claims that on average, at least twenty five clients visit her per week. for a random sample of 8 weeks, the following numbers of clients were recorded; 25

Accounts payable in accounting, Volumes due to personal individuals or comp...

Volumes due to personal individuals or companies for products and/or services obtained by the state. Records Due does not involve amounts due to other companies, resources, or othe

Define right selling and buying strategy, Mr. Palsson plans to buy a MacBoo...

Mr. Palsson plans to buy a MacBook Pro which can hold the 6GB of RAM (he has a 4GB chip laying around, so he doesn't care what RAM is actually in the computer, as long as the compu

Standard deviation, the first four moments of a distribution about the mean...

the first four moments of a distribution about the mean are 0,16,-64 and 162.what is the standard deviation ?

Define Annuity , Annuity A sequence of equivalent money payments made or o...

Annuity A sequence of equivalent money payments made or obtained at equivalent durations over a specific time period.

Sample space of an experiment, 1.The resumés of 2 males applicants for a co...

1.The resumés of 2 males applicants for a college teaching position in chemistry are places in the same file as the resumés of 2 female applicants. Two positions become available a

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

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