What scores fall between standard deviation

Assignment Help Basic Statistics
Reference no: EM131927872

1) The diameters of bolts produced by a certain machine are normally distributed with a mean of 0.30 inches and a standard deviation of 0.01 inches. What percentage of bolts will have a diameter greater than 0.32 inches?

2) The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 88 inches, and a standard deviation of 10 inches. What is the likelihood that the mean annual precipitation during 25 randomly picked years will be less than 90.8 inches?

3) A mean score on a standardized test is 50 with a standard deviation of 10. Answer the following

a. What scores fall between -1 and +1 standard deviation?

b. What percent of all scores fall between -1 and +1 standard deviation?

c. What score falls at +2 standard deviations?

d. What percentage of scores falls between +1 and +2 standard deviations?

Reference no: EM131927872

Questions Cloud

Explain why this phenomenon exists : The average face value of new policies issued in the most recent year in the exhibit is greater than the average face value of all policies in force.
How can the family structural theory be applied to scenario : How can both the family structural theory and the family developmental theory be applied to this scenario?
What is the probability of either x or y occurring : The events X and Y are mutually exclusive. Suppose P(X) = .05 and P(Y) = .02. (Show work)
What is the price of this stock today : The price of the stock is set to yield a return of 11%. What is the price of this stock today?
What scores fall between standard deviation : A mean score on a standardized test is 50 with a standard deviation of 10. Answer the following
Company fundamentals indicates it should be retained : They have decided to retain security until it appreciates back to $30, and then sell it unless review of company’s fundamentals indicates it should be retained.
Discuss your facilitys procedure for reporting type of abuse : Discuss your facility's procedure for reporting these types of abuse. What characteristics would lead a provider to suspect domestic violence and child abuse.
How to maintain a positive operating ratio : An insurance company's projected loss ratio is 79.1 percent, and its loss adjustment expense ratio is 13.4 percent.
What does the irr rule indicate about this investment : Innovation Company is thinking about marketing a new software product. Up front costs to market and develop the product are $4.95 million.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Statistics-probability assignment

MATH1550H: Assignment:  Question:  A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..

  What is the least number

MATH1550H: Assignment:  Question:     what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?

  Determine the value of k

MATH1550H: Assignment:  Question:     Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form

  What is the probability

MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?

  Binomial distributions

MATH1550H: Assignment:  Questions:  Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.

  Caselet on mcdonald’s vs. burger king - waiting time

Caselet on McDonald’s vs. Burger King - Waiting time

  Generate descriptive statistics

Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.

  Sampling variability and standard error

Problems on Sampling Variability and Standard Error and Confidence Intervals

  Estimate the population mean

Estimate the population mean

  Conduct a marketing experiment

Conduct a marketing experiment in which students are to taste one of two different brands of soft drink

  Find out the probability

Find out the probability

  Linear programming models

LINEAR PROGRAMMING MODELS

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