Probability of getting none of the questions right

Assignment Help Basic Statistics
Reference no: EM1395354

A multiple choice test has three questions with 5 possible answers (and oly one right answer each). You decide to randomly guess the right answer.

A. What is the probability of getting the first question right?

B. what is the probability of getting the first two questions right?

C. What is the probability of getting all three questions right?

D. what is the probability of getting none of the questions right?

E. What is the probability of getting at least one of the questions right?

Reference no: EM1395354

Questions Cloud

Model of an ordinary quantitative variable : Discuss whether this variable should be placed in the model as an ordinary quantitative variable or by means of four 0, 1 indicator variables.
Benefits of rnaseq over dna microarrays : What are the benefits of RNAseq over DNA microarrays for expression profiling?
Physics- how much time is required to row cross the river : Physics: How much time is required to row cross the river? How wide is the river?, A river man can row his boat at a speed of 2.5 m/s through still water. He wants to row directly across a river that has a current flowing at 1.5m/s
Mechanisms by which integument helps to prevent infection : Explain 4 mechanisms by which the integument helps to prevent infection. In other words, explain either specific actions the integument performs or characteristics of its structure.
Probability of getting none of the questions right : A multiple choice test has three questions with 5 possible answers (and oly one right answer each). You decide to randomly guess the right answer.
Makeshift child''s swing- child''s weight, magnitude of force : Makeshift child's swing: Child's weight, magnitude of force, maximum angle, A makeshift swing is constructed by making a loop in one end of a rope and tying the other end to a tree limb.
Correlation and causal conclusions : John, a medical practitioner at a private medical facility, is discussing the problem that one of his patients, Tom, says he has been having with the medication that the doctor has prescribed.
Rank correlation for car fuel consumption : Listed below are the highway fuel consumption amounts (in mi/gal) from cars in three different categories. Use a 0.05 signifiacance level to test the claim that the different car categories have the same median highway fuel consumption.
Lyme disease problem : Grace heard on the evening TV news that the deep population in her state had been increasing rapidly in the past few years and it was common knowledge that deer walked the streets at night.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Average forecast with an exponential smoothing fore-cast

Compare a three-month moving average forecast with an exponential smoothing fore-cast for a = 0.2. Which provides the better forecasts using MSE as the measure of model accuracy?

  Determining standard z-scores

Is the z value positive or negative? Explain why it should be positive or negative.

  Probability in book seller

USA Today reported that 11% of all books sold are of the romance genre. If a local bookstore sells 316 books on a given day, what is the probability that

  Variation in final grades for operations

The final grades given by two professors in introduction to operations research course have been carefully examined. The students in the first professor's class had a grade point average of 3.0 and a standard deviation of 0.2.

  Z-score and raw score conversion

Give the Z score for person who scores (a) 340, (b) 310, and (c) 260. Give the raw scores for persons whose Z score on this test are (d) 2.4, (e) 1.5, (f) o, and (g) -4.5

  What is the r-squared value

If the sum of squares total is 800 and the sum of squares error is 170. What is the r-squared value?

  Computing welch f-statistic

For each problem, compute a Welch F-statistic and determine whether or not significant differences exist among the treatment conditions.

  Determining confidence interval for true time battery pack

Determine a 95% confidence interval for true time battery pack can function before having to be recharged.

  Significance of correlation coefficient

Test the hypothesis that the true Pearson correlation (p) is significantly different from zero. Provide a (p) value (two-tail) n=12. Correlation intake is .448 for the two recording methods.

  What is the probability that at least three click on an ad

If 900 users visited the site, would the probability that more than 250 of them click on an ad be higher or lower than the answer found in part

  Decision theory-minimax and maximax principle

Decision making under risk is the same as decision making under uncertainty because in both the probabilities are unknown.

  Type of inference being made

lowering the price does not decrease this behavior and we should not decide to lower prices based on this research." Comment on the executive's conclusion. What type of inference is being made? Will the decision not to lower prices be a good one.

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