Te scores on an exam are normally distributed with micro

Assignment Help Basic Statistics
Reference no: EM13577416

Question: The scores on an exam are normally distributed with µ = 30 and s = 7. (Show your working.)

a) What percent of the population have scores above 40?

b) What percent have scores between 30 and 40?

c) What score will place a student in the top 5% (to 1 decimal place)?

Reference no: EM13577416

Questions Cloud

State the approximate distribution for the total number of : question in a given large town the number of children x in a family chosen at random has the following
Raw materials are studied for contamination suppose that : raw materials are studied for contamination. suppose that the number of particles of contamination per pound of
Nimitz rental company provided the following information to : nimitz rental company provided the following information to its auditors. for the year ended march 31 2011 the company
Let r be the random variable which determines the face : consider rolling two fair dice one green and one red. let r be the random variable which determines the face value of
Te scores on an exam are normally distributed with micro : question the scores on an exam are normally distributed with micro 30 and s 7. show your working.a what percent of
The time it takes a cell to divide called mitosis is : the time it takes a cell to divide called mitosis is normally distributed with an average time of one hour and a
B2b co is considering the purchase of equipment that would : b2b co. is considering the purchase of equipment that would allow the company to add a new product to its line. the
The ages of subscribers to a certain mailing list are : the ages of subscribers to a certain mailing list are normally distributed with mean 35.5 years and standard deviation
Winning symbol caps are placed randomly on 5 of the : questiona soft drink manufacturer is using a winning cap as a sales promotion. the purchaser can get a prize if they

Reviews

Write a Review

Basic Statistics Questions & Answers

  Cockpit noise level independent of flight phase

High levels of cockpit noise in an aircraft can damage the hearing of pilots who are exposed to this hazard for many hours. A Boeing 727 co-pilot collected 61 noise observations using a handheld sound meter.

  Determine confidence interval on difference in mean number

Determine a 90% confidence interval on difference in mean number of production units for two shifts. Compute 99% confidence interval for part A.

  Brakes for a model of automobile

Brakes for a model of automobile fail with a Poisson distribution at an annual rate of 4.4/yr. What is the probability that

  Find confidence interval for supervisors population mean

The population standard deviation was 1.7 years using .95 degree of confidence what is the confidence interval for the population mean?

  Discussion of statistics concepts

Students in a statistics class at a large state university were given the survey in which one question asked was age (in years); one student was a retired person, and her age was an "outlier".

  Sample-size for population mean

How many boxes must the processor sample to be 95 percent confident that the sample mean does not differ from the population mean by more than 0.2 pounds?

  Suggested retail price of the used 2005 gm car in excellent

In this case, we are going to study some data collected from Kelly Blue Book for several hundred 2005 used General Motors (GM) cars. This data allows one to develop regression models to determine car values based on

  Lowest possible score

Find the lowest possible score a candidate can score and still qualify. Assume the scores are normally distributed.

  Hypothesis testing for proportion in dependent samples

Which test do we use to see if the difference in our sample is statistically significant? Why? Should it be one or two-tailed?

  1consider a small experiment to investigate if biofeedback

1.consider a small experiment to investigate if biofeedback can reduce blood pressure. six subjects were randomized to

  Probability that eleven patients are pleased with service

Use the correct formula to find the probability that, out of 15 patients, exactly 11 are pleased with the service. Show your calculations or explain how you found the probability.

  The length of human pregnancies from conception to birth

question length of pregnanciesthe length of human pregnancies from conception to birth varies according to a

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