User Account

All Pages

Highest score earned on the exam

Assignment Help Basic Statistics
Reference no: EM1398252

For a particular sample of 66 scores on a psychology exam, the following results were obtained.

First quartile = 63 Third quartile = 93 Standard deviation = 6 Range = 58

Mean = 74 Median = 78 Mode = 85 Midrange = 62

Answer each of the following:

I. What score was earned by more students than any other score? Why?

II. What was the highest score earned on the exam?

III. What was the lowest score earned on the exam?

IV. According to Chebyshev's Theorem, how many students scored between 56 and 92?

V. Assume that the distribution is normal. Based on the Empirical Rule, how many students scored between 68 and 80?

Please show all of your work.

Reference no: EM1398252

Questions Cloud

Determining confidence interval iii : Calculate a 95% confidence interval for the average lifetime of the washing machines that the company uses. Calculate the sample size required to reduce the margin of error for a 95% confidence interval down to 7 (i.e. E = 7).
Mean weight of all meat pies : Suppose that in order to satisfy legal requirements, a meat pie manufacturer may only produce .2% of pies below a weight of 750grams. If the preceding holds and if the weight of all pies is normally distributed with a standard deviation of 50 gram..
Determining poisson random variable : A manuscript is sent to a typing firm consisting of typists A, B, and C. If it is typed by A, then the number of errors made is a Poisson random variable with mean 2.6; if typed by B, then the number of errors is a Poisson random variable
Description of poisson random variable : We monitor the number of incoming calls into a doctor's office. Let X be the number of incoming calls between the hours of l pm and 2 pm and Y be the number of calls between l pm and 3 pm.
Highest score earned on the exam : What score was earned by more students than any other score? Why?  What was the highest score earned on the exam?
Explain revolt of evil fairies by ted poston : In The Revolt of Evil Fairies by Ted Poston, provides the exciting view about mindsets of children. Describe the importance of power struggles between children.
Question on poisson distribution : An insurance company has gathered the following information regarding the number of accidents reported per day over a period of 100 days.
Portion of an electric circuit with three relays : Consider the following portion of an electric circuit with three relays. Current will flow from point A to point B if there is at least one closed path when the relays are activated. The relays may malfunction and not close when activated.
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

Reviews

Write a Review

Basic Statistics Questions & Answers

  Simple and multiple regression and correlation

Please summarrize, find the most important formulas, and explain a solve problem for each of this statictics topics: A. Simple regression and correlation B. Multiple regression and correlation

  Effect of regular exercise on cholesterol levels

All but one of the following statements contain a blunder. Which one does not contain a blunder

  Probability of a fatal accident

What is the probability of a fatal accident over a lifetime?

  Determining more variation in first population

Standard deviation of 7. At 0.01 significance level, is there more variation in first population?

  Computing z-score for advertising time

You listen to radio station for 1 hour, at arbitrarily selected time, and carefully observe that amount of advertising time is equal to 7 minutes. Compute z-score for this amount of advertising time.

  Payoff table for mountain ski decision problem

Construct a payoff table for Mountain Ski's decision problem of how many pairs of skis to order. What is the best decision from an expected value basis?

  Error between the sample mean and population mean

A random sample obtained from a population has a mean of µ=100 and a standard deviation of σ = 20. The error between the sample mean and the population mean for a sample of n = 16 is 5 points and the error between a sample men and population mean ..

  Show the prediction interval for the regression line

Prediction interval for the regression line - Using the age and sick days data from table below, find the 98% prediction interval when x = 47 years.

  Sum of random variables

Suppose that the grams of fat have a normal distribution and form 90%, 95%, and 99% confidence intervals for the mean grams of fat. Based on this data, can we say that the labeling on the package is misleading?

  Find out probability values from discrete distribution

A consumer organization estimates that over a 1-year period 17 percent of cars will require to be repaired once, 7 percent will need repairs twice, and 4 percent will require three or more repairs. What is the probability that a car chosen at rand..

  Normal distribution-z-score and percentage

Suppose a botanist grows many individually potted eggplants, all treated identically and arranged in groups of four pots on the greenhouse bench.

  What is the probability that the students in the sample

The student body of a large university comprises 60% female students. Elucidate what is the probability that the students in the sample exactly two are female?

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd