What is the expected number correct

Assignment Help Basic Statistics
Reference no: EM131727352

Question: Joe performs remarkably well on remote viewing ESP tests, which require the "viewer" to draw a picture, and then determine which of four possible photos was the intended "target." Because the target is randomly selected from among the four choices, the probability of a correct match by chance is 1/4, or .25. Joe participates in three experiments with n = 10, 20, and 50 trials, respectively. In the three experiments, his numbers correct are 4, 8, and 20, respectively, for a total of 32 correct out of 80 trials.

a. For each experiment, what is the expected number correct if Joe is just guessing?

b. Over all 80 trials, what is the expected number correct? Explain how you found your answer.

c. For each experiment separately, find the approximate probability that someone would get as many correct as Joe did, or more, if the person was just guessing.

d. Out of the 80 trials overall, find the approximate probability that someone would get as many correct as Joe did (32), or more, if the person was just guessing.

e. Compare your answers in parts (c) and (d). If Joe were trying to convince someone of his ability, would it be better to show the three experiments separately, or would it be better to show the combined data? Explain.

Reference no: EM131727352

Questions Cloud

What is the amount of service department cost allocated : What is the amount of service department cost allocated to P1 and P2 using the step method with S1 going first
What diagnosis codes are assigned : What code would be assigned for anterior segment imaging with fluorescein angiography, with interpretation and report - What code is assigned for a hepatitis C
Briefly evaluate the credibility of the information : Briefly evaluate the credibility of the information; describe one market opportunity relating to the data, and identify and recommend one organization.
Avoid discrimination and still build an efficient workforce : what advice would you give? how can the company avoid discrimination and still build an efficient workforce?
What is the expected number correct : Joe performs remarkably well on remote viewing ESP tests, which require the "viewer" to draw a picture, and then determine which of four possible photos.
Dihybrid cross between rrtt and rrtt : In a dihybrid cross between RrTt and RRtt, what are the genotype and phenotype ratios of the offspring, assuming R and T are dominant?
Prepare for medical emergencies and natural disasters : We live in a time when we need to prepare for medical emergencies and natural disasters, as well as acts of terrorism.
Situation or has her sense of self-delusion been crumbled : At the end of "Miss Brill," by Mansfield, the titular character claims that she hears her fur crying from its box
Nonprofit corporation formed by alex : ABC is a nonprofit corporation formed by Alex. As its promoter, Alex made a few contracts with Johnsons Inc.

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