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

Good measure of central tendency, What are the characteristics of a good me...

What are the characteristics of a good measure of central tendency

Job costing order, Diketahui: Biaya Bahan Baku 15.500 Biaya Tenaga Kerja La...

Diketahui: Biaya Bahan Baku 15.500 Biaya Tenaga Kerja Langsung:14.750 Biaya Overhead pabrik 11.800 Barang Jadi 37500 Bahan baku yang deibebankan ke satu pesanan yang masih dalam

What is the coefficient of determination, The data in the table below are t...

The data in the table below are the results of a random sample of recent home sales in your neighborhood that your boss has asked you to use to estimate the relationship between th

Assingment, #question:how cost classification can helpful for planning, con...

#question:how cost classification can helpful for planning, controlling and decision making

How to calculate Median?, Median The median describes the value of the ...

Median The median describes the value of the middle term in data. The data set must be ranked first in increasing order before the middle value is identified. The median separa

Time series, what are the importances of time series

what are the importances of time series

Regression, y=c+1075x, when x was 2, and y was 239, given that y intercept ...

y=c+1075x, when x was 2, and y was 239, given that y intercept was 11. Calculate the residual

Determine the probability, Question 1: A mail-order firm has a circular...

Question 1: A mail-order firm has a circular which elicits a 10% response rate. Suppose 20 of the circulars are mailed as a market test in a new geographic area. Assuming that

Probability, jay can remember only the first 4 digits of his friends phone ...

jay can remember only the first 4 digits of his friends phone number. he also knows that the number has 7 digits and the last digit is not a zero. if jay were to dial all of the po

Degree of tastiness, A researcher is interested in comparing tastiness of d...

A researcher is interested in comparing tastiness of different parts of cheese in grilled cheese sandwiches.  The researcher expects that Cheddar cheese grilled sandwiches are rate

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