Find out the expected number of correct responses under, Ask an Expert

Statistics

1. Bill has completed a ten question multiple choice test on which he answered seven questions correctly. Each question had one correct answer to be chosen from four alternatives. Bill says that he answered the test by randomly selecting the answers without reading the questions or answers.

a. Find out the expected number of correct responses under these circumstances if one in fact selects the responses at random. What is the standard deviation?

b. What is the probability of Bill guessing seven of the ten answers correctly?

c. What is the probability that one could guess six or more answers correctly?

d. What do you think of Bill's claim? Explain.

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9356934

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

A homeless shelter program wants to know if receipt of job

A homeless shelter program wants to know if receipt of job training program (yes, no) is related to program satisfaction (measured on a multi-item, Likert scale ). What type of statistical test should be used?

Abbb-rated corporate bond has a yield to maturity of 128

A? BBB-rated corporate bond has a yield to maturity of 12.8 %. A U.S. treasury security has a yield to maturity of 11.4 %. These yields are quoted as APRs with semiannual compounding. Both bonds pay? semi-annual coupons ...

Determine the operating cash flow ocf for kleczka llc based

Determine the operating cash flow? (OCF) for? Kleczka, LLC., based on the following data. During the year the firm had sales of $2,548,000?, cost of goods sold totaled $1,802,000?, operating expenses totaled $320,000?, a ...

Lt a and b be two events where pa 048 pb 022 and pbcac

Let A and B be two events where P(A) = 0.48, P(B) = 0.22, and P(BC|AC) = 0.91. What is the probability of A or B (a union b)?

A suppose you purchase a 3-year zero-coupon bond with face

(a) Suppose you purchase a 3-year zero-coupon bond with face value of $1000 and a price of $850. What is the bond's yield? If you hold the bond to maturity, what will be your effective annual return? (b) Now suppose you ...

A cell phone company offers 15 different voice packages and

A cell phone company offers 15 different voice packages and 15 different data packages. Of those, 6 packages include both voice and data. How many ways are there to choose either voice or data, but not both?

Determine the margin of error for an 80 confidence interval

Determine the margin of error for an 80?% confidence interval to estimate the population mean when s? = 36 for the sample sizes below. ?a)n=12 ?b)n=26 ?c)n=54 ?a) The margin of error for an 80?% confidence interval when ...

You are the foreman of the bar-s cattle ranch in colorado a

You are the foreman of the Bar-S cattle ranch in Colorado. A neighboring ranch has calves for sale, and you are going to buy some calves to add to the Bar-S herd. How much should a healthy calf weigh? Let x be the age ...

Adult male heights x have n70 33a what percent of adult

Adult male heights X have N(70", 3.3") a.) What percent of adult males are shorter than 63"? b.) What percent of males are taller than 70"? c.) What's the 80th percentile of male heights? Show work

What types processes or procedures support project

What types processes or procedures support project management, continuous improvement and innovative initiatives?

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