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

Analyze data using chi-square test , Analyze the given data using chi-squar...

Analyze the given data using chi-square test and see if it fits the expected 9:3:3:1 F 2 phenotypic ratio.   Ho: Null hypothesis: The F 2 phenotypic ratio follows the

Survey statistics, #qa national poll of 1836 respondents indicated that 36%...

#qa national poll of 1836 respondents indicated that 36% support the NDP. Test whether this is sufficient evidence to show that the NDP support has increased since the election. Us

Simple Linear Regression, One measure of the risk or volatility of an indiv...

One measure of the risk or volatility of an individual stock is the standard deviation of the total return (capital appreciation plus dividends) over several periods of time. Altho

Values of income and intrest rate, Now imagine that consumption is given as...

Now imagine that consumption is given as:             C = 400 + 0.9YD - 1,750i And as above:       Y = PE = C + I + G + NX                           (Income identity)

Tootsie roll industries, I am in need of your help again. First and foremo...

I am in need of your help again. First and foremost, I thought I had created an account, but none could be found. In any event here is my assignment. Should you decide that you

Statistics for people who hate statistics, what third variable might effect...

what third variable might effect fathers gpa and childs social skills

Normal curve and the standard deviation, What is the relationship between t...

What is the relationship between the normal curve and the standard deviation? Name and explain three special features of a normal distribution

Probability, 1) A certain brand of batteries has a lifetime that has a norm...

1) A certain brand of batteries has a lifetime that has a normal distribution with a mean of 3,800 hours and a standard deviation of 390 hours. b) What lifetime should the manufac

Budgetary control, Budgetary control The manage or management of a governm...

Budgetary control The manage or management of a governmental component in agreement with an approved budget for the purpose of keeping expenditures within the limits of available

Index number, Characteristics of index number

Characteristics of index number

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