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

Calculate and interpret, U.S. College presidents have described alcohol abu...

U.S. College presidents have described alcohol abuse as the number one problem on campus.  How common is it?  As a super crackerjack student, you conducted a survey of 17,096 stude

What is degrees of freedom, What is  Degrees of Freedom : While comparing ...

What is  Degrees of Freedom : While comparing the calculated value of X2 with the table value we have to determine the degrees of freedom. By degrees of freedom we mean the number

Change in the performance of the lamps between the dates, Q.2. (ii) A compa...

Q.2. (ii) A company making lamps has drawn a sample from its production line and measured the light output from each. The results, in microamps, are as follows: 9.1 9.8 9.5

find the standard deviation, Research Question: Percentage of student...

Research Question: Percentage of students who drank a can, bottle, or glass of soda or pop (not including diet soda or diet pop) at least 1 time per day during the seven days

Type of correlation, Which type of correlation would be appropriate to calc...

Which type of correlation would be appropriate to calculate for the each of the following sets of data? A.   Correlating gender and year in college (freshman, sophomore, junior,

Probability, Mike sells on the average 15 newspapers per week (Monday – Fri...

Mike sells on the average 15 newspapers per week (Monday – Friday). Find the probability that 2.1 In a given week he will sell all the newspapers

Meaning of book keeping, What do you understand by the term “Book Keeping”?...

What do you understand by the term “Book Keeping”? Ans. In nutshell the attending the Accounting Process is called or referred as Book Keeping in other plain words we may concern

Index, where i found an assignment about index?

where i found an assignment about index?

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

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