Homer guesses randomly on all 25 questions. what is the, Ask an Expert

Statistics

A multiple choice test has 25 problems each with 5 options. 4 points are given for each correct answer and 1 point is subtracted for each incorrect answer. Homer and Lisa are among a large number of test takers.

a) Homer guesses randomly on all 25 problems. What is the chance he gets at most 2 correct?
b) Homer's possible scores ranges from ...to...?
c) What is the expected value and SE of his score?
d) The chance that Homer gets 9 or more problems correct is approximately?
e) Lisa knows the answer to 21 problemsand randomly guesses on the remaining for problems. Her possible total score ranges from .... to.....?
f) The chance that the Lisa gets her lowest possible score is?
g) Lisa's expected score?
h) The SE of Lisa's score?
i) There were many other test takers like Homer who randomly guessed on all 25 problems. A scatter plot for all of them showing the number of correct answers vs. the number of incorrect answers has a correlation of ?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9110939

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Are the outcomes of hospital care different on weekends

Are the outcomes of hospital care different on weekends than weekdays? In a random sample of 500 patients who experienced severe medical complications after admission to acute care wards in three U.S. states from 1999 an ...

Basic statisticsactivity 1define the following terms1

BASIC STATISTICS Activity 1 Define the following terms: 1. Statistics 2. Descriptive Statistics 3. Inferential Statistics 4. Population 5. Sample 6. Quantitative Data 7. Discrete Variable 8. Continuous Variable 9. Qualit ...

A firm that produces light bulbs claims that their

A firm that produces light bulbs claims that their lightbulbs last 1500 hours, on average. You wonder if the average might differ from the 1500 hours that the firm claims. To explore this possibility you take a random sa ...

Suppose we can only sample from uniform distribution 01

Suppose we can only sample from Uniform distribution (0,1) with k=3. Design an algorithm to simulate chi-square distribution with 2k freedom via general transformation method.

1 you are analyzing a common stock with a beta of 28 the

1.) You are analyzing a common stock with a beta of 2.8. The risk-free rate of interest is 5 percent and the expected return on the market is 12 percent. What is the stock's equilibrium required rate of return? Round to ...

Assume that the fisherman can use between 5 and 8 lines

Assume that the fisherman can use between 5 and 8 lines. With 5 lines, the probability of a catch on each line is 0.71. With 6 this probability is 0.63, with 7 it is 0.51, and with 8 the probability is 0.43. 1) How many ...

A machine has four components a b c and d set up in such a

A machine has four? components, A? B, C, and? D, set up in such a manner that all four parts must work for the machine to work properly. Assume the probability of one part working does not depend on the functionality of ...

A population has a mean mu79 and anbspstandard deviation

A population has a mean μ=79 and a standard deviation σ=24. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=248 μx= ?Simplify your? answer. σx= rounded to three decimal ...

Lisa anderson expects to need 80000 for a down payment on a

Lisa Anderson expects to need $80,000 for a down payment on a house in six years. How much would she have to invest today in an account paying 7.25 percent in order to have $80,000 in six years? (Round answer to 2 decima ...

Initial outlay is 16853year 1 5625year 2 5504year 3

Initial outlay is $16,853 Year 1 $5,625 Year 2 $5,504 Year 3 $5,892 Year 4 $8,851 What is the discounted payback period? The discount rate is 10%...Round answer to two decimal points

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert