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

  Explain of the importance of medical informatics

Define and explain of the importance of medical informatics. What impact does medical informatics have on the quality of care of patients?

  Calculate descriptive statistics for the prices of brands

ECON940 - Statistics for Decision Making - Calculate descriptive statistics for the prices of different brands. Comments on the location, shape and variability of those distributions.

  Violate the principles of decision analysis

William is a private equity guru. One year ago, the owners of a troubled retail company accepted William's buyout offer of $15M.

  Discuss fallacies of the people of the philippines

People of the Philippines, I have returned! The hour of your redemption is here! Rally to me! Let the indomitable spirit of Bataan and Corregidor lead on!

  Computing probability of failure of system

Find the probability of failure of system for any 4 hours of operation?

  Dog holiday presents

About 72% of dog owners buy holiday presents for their dogs. Suppose n = 4 dog owners are randomly selected. Find the probability that three or more buy.

  The amount of fill weight of contents put into a glass jar

the amount of fill weight of contents put into a glass jar of spaghetti sauce is normally distributed with mean ? 850

  Standard in and outputs all information to standard out

Given an input dictionary read in from a file to use for all test cases, and several word search grids, identify all words from the dictionary that appear in each word search grid.

  Relationship between two quantitative variables

If we consider whether people tend to weigh more if they eat more cheese, are we considering two single quantitative variables or the relationship between.

  Specify the hypotheses to justify the suggestion

a. Specify the hypotheses to justify the suggestion. b. Find the critical value(s) of the appropriate test at the 1% significance level.

  Find probability advertising firm has income after tax

A study of 200 advertising firms revealed their income after taxes: What is the probability an advertising firm selected at random has under $1 million in income after taxes?

  Normal population with hypothesized mean

Consider a random sample of size 28 from a normal population with hypothesized mean µ0 = 9.96.

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