Answered step by step

Verified Expert Solution

Link Copied!

Question

1 Approved Answer

Posted on Oct 13, 2021

Suppose a multiple choice test contains 40 questions. If each question has 5 answer choices only one of which is correct, what is the

Suppose a multiple choice test contains 40 questions. If each question has 5 answer choices only one of which is correct, what is the expected number of questions to be answered correctly by guessing? The SAT used to penalize wrong answers by subtracting 1/4 a point from each incorrect answer. If each question on the SAT has 5 answer choices only one of which is correct, what is the expected number of points awarded by guessing on 40 questions?

Step by Step Solution

★★★★★

3.30 Rating (150 Votes )

There are 3 Steps involved in it

Step: 1

DMultiple choice Puestions 40 Ansuer fabmblity of getiny ... blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

Step: 3

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Advanced Engineering Mathematics

Authors: ERWIN KREYSZIG

9th Edition

0471488852, 978-0471488859

More Books

Students also viewed these Mathematics questions

Question

★★★★★

A multiple choice test contains 25 questions, each with four answers. Assume a student just guesses on each question. (a) What is the probability that the student answers more than 20 questions...

Answered: 1 week ago

Question

★★★★★

2. A factory produces two types of products. To produce these products, the factory needs some resources, such as labor and two raw materials (i.e., aluminum and glass). The factory has available...

Answered: 1 week ago

Question

★★★★★

If two jobs are available, one of which is fun and very respectable and the other unpleasant and dangerous, where would you expect wages to be higher? Is that really so in practice?

Answered: 1 week ago

Question

★★★★★

Why " Kodak " is unsuccessful in implementing a strategy. Can you prepare a critical examination of the strategy to address the following questions about Kodak. What was the strategy and why do you...

Answered: 1 week ago

Question

★★★★★

How does Alderfers ERG theory of needs and motivation differ from Maslows?

Answered: 1 week ago

Question

★★★★★

Bradwich plc is a medium-sized engineering company whose shares are listed on a major Stock Exchange. It has recently applied to its bankers for a 7-year loan of 500,000 to finance a modernisation...

Answered: 1 week ago

Question

★★★★★

=+5. For which one of the following situations would a Kruskal-Wallace test be appropriate?

Answered: 1 week ago

Question

★★★★★

A thirty-year U.S. Treasury bond has a 4.0 percent interest rate. In contrast, a ten-year Treasury bond has an interest rate of 3.7 percent. If inflation is expected to average 1.5 percentage points...

Answered: 1 week ago

Question

★★★★★

do this using c++ data structure. please do this in one hour as it is graded assignment. time is too short. plz fast Question 1: Marks 5+5+5=15] Write a program to implement the BST (Binary Search...

Answered: 1 week ago

Question

★★★★★

Mahalo Boat Adventure Inc. has a July 31 year-end. It showed the following partial amortization schedules regarding two bond issues: Required Answer the following for each bond issue: a. Were the...

Answered: 1 week ago

Question

★★★★★

The difference between gross profit and the companys operating expenses is sales revenue. gross profit. operating income. net income.

Answered: 1 week ago

Question

★★★★★

Current Attempt in Progress On January 1, 2022. Sandhill Corporation acquired machinery for $1680000. Sandhill adopted the straight-line method of depreciation for this machine and had been recording...

Answered: 1 week ago

Question

★★★★★

Answered: 1 week ago

Question

★★★★★

Donna owns a macaron store and makes all her macarons in-house. Business is particularly heavy during the "wedding season" of June and July. Donna signed a contract with Sweet-Ums Inc. to buy 2,000...

Answered: 1 week ago

Question

★★★★★

Matthews Produce harvests and sells Florida oranges. Matthews has hired you to determine its return on investment (ROI) based on both net book value (NBV) and gross book value (GBV). Financial data...

Answered: 1 week ago

Question

★★★★★

Crane Company offers a five-year warranty on its products. Crane previously estimated warranty costs to be 3% of sales but in 2025 revised this estimate to 1% due to process and quality control...

Answered: 1 week ago

Question

★★★★★

Please answer using same format? tial loss $330 EX 25-7 Make-or-buy decision OBJ. 1 Diamond Computer Company has been purchasing carrying cases for its portable comput- ers at a purchase price of $59...

Answered: 1 week ago

Question

★★★★★

Ask students to outline the reasons why the various elements of culture (social structures and control systems, language and aesthetics, religion and other belief systems, educational systems, etc.)...

Answered: 1 week ago

Question

★★★★★

Error bounds derive error bounds for p2 (9.2) in Example 2 from (5)

Answered: 1 week ago

Question

★★★★★

If in Prob. 11 the axes are grounded (u = 0), what constant potential must the other portion of the boundary have in order to produce 100 volts at P11?

Answered: 1 week ago

Question

★★★★★

Suppose that in operating battery-powered electrical equipment, it is less expensive to replace all batteries at fixed intervals than to replace each battery individually when it breaks down,...

Answered: 1 week ago

Question

★★★★★

We met the Tour de France data set in Chapter 1 (in Just Checking). One hundred years ago, the fastest rider finished the course at an average speed of about 25.3 kph (around 15.8 mph). By the 21st...

Answered: 1 week ago

Question

★★★★★

Has the trend of decreasing difference in age at first marriage seen in Exercise 36 gotten stronger recently? The scatterplot and residual plot for the data from 1980 through 2011, along with a...

Answered: 1 week ago

Question

★★★★★

For humans, pregnancy lasts about 280 days. In other species of animals, the length of time from conception to birth varies. Is there any evidence that the gestation period is related to the animal's...

Answered: 1 week ago

Previous Question Next Question