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)?

Marketing research field surveys, In marketing research field surveys ar...

In marketing research field surveys are commonly used to collect primary data from the respondents. 1. Through Personal Interviews: The investigator follows a rigid proced

Assignment, An experiment succeeds twice as often as it fails. Find the cha...

An experiment succeeds twice as often as it fails. Find the chance that in the next six trials there will be at least four successes

Operation research, Meaning and solving example using north-west corner in ...

Meaning and solving example using north-west corner in Transportation problem

Obtain the critical value for a hypothesis test, Obtain the critical value ...

Obtain the critical value (or values) for a hypothesis test for the mean if you conduct: (a) an upper tail "z" test at the 1% level of significance. (b) a two-tailed "z" test

Schedules, what are the characteristics of schedules

what are the characteristics of schedules

Time series, Explain how you would decide whether to use the additive model...

Explain how you would decide whether to use the additive model or the multiplicative model to analyse a time series.

Agency funds, Agency funds,define it Organization money is used to account ...

Agency funds,define it Organization money is used to account for the resources presented by the state as an agent for individuals, private companies, and other health systems. Orga

First quetion, what is accounting ?

what is accounting ?

#title.- historigram, #question.differentiate between historigram and histo...

#question.differentiate between historigram and histogram.

Projectile, two object are on the same level we release the first one verti...

two object are on the same level we release the first one vertically and the other one with an initial velocity which object will land first?