Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

One hundred Lower Wabash Tech students take the 10-problem multiple-choice test with 4 answers to each problem, exactly one of which is correct. All of students are unprepared and should guess at each problem.

1. How many unprepared students would've to take this test to guarantee ten score of 6? Ten scores of 7? Ten scores of 8? Show your work or describe your reasoning.

2. Sarah as well takes the test, and she wants to know how many correct answers she and Richard can expect to get all together. Answer Sarah's problem.

3. Find out the standard deviation of the difference between Sarah's and Richard's scores?

4. Richard wants to know how many problems he will have to answer till he gets one correct. Has the random variable changed (i.e., is it now different from the one you identified in (a)?)? If so, recognize this new random variable and justify your answer. Then answer Richard's problem.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M922311

Have any Question? 


Related Questions in Statistics and Probability

Suppose we would like to determine if the typical amount

Suppose we would like to determine if the typical amount spent per customer for dinner at a new restaurant in town is more than $20.00. A sample of 49 customers over a three-week period was randomly selected and the aver ...

Another simple question can you give me 3 points regarding

Another simple question, can you give me 3 points regarding to origins of the Cold War.

Your company is seeking to forecast demand for the next

Your company is seeking to forecast demand for the next month based on the information given in the following table: Month May June July Aug Oct Sept Oct Nov Dec Demand 40 44 43 45 42 50 48 54 a. (6) Develop a forecast f ...

A researcher was interested in whether people tend to marry

A researcher was interested in whether people tend to marry individuals who are about the same level of physical attractiveness as they are. She took individual photographs of 14 pairs of spouses. Then, she had 10 partic ...

1 in an experiment with two independent variables an anova

1. In an experiment with two independent variables, an ANOVA partitions the total variance into four components. What are they? 2. MS wg  appears in the denominator of every F-test. Why?

Microcomputer components a staff analyst for a manufacturer

Microcomputer components. A staff analyst for a manufacturer of microcomputer components has compiled monthly data for the past 16 months on the value of industry production of processing units that use these components ...

Why would the following hypothesis not work for anova

Why would the following hypothesis not work for anova problem? H0: μ1=u2=u3=u4 and H0: μ1≠u2≠u3≠u4 What does the y-intercept represent in terms of linear analysis (and linear regression analysis) and give an example of h ...

1 what is the minimum reliability coefficient that

1. What is the minimum reliability coefficient that researchers consider acceptable? Why do researchers use this minimum criterion for reliability? 2. For what kind of measure is it appropriate to examine test-retest rel ...

Question 1interpret the following output examining group

Question 1 Interpret the following output examining group differences for purchase intentions. The three groups refer to consumers from the states of Illinois, Louisiana and Texas Dependent variable int 2 Source Type III ...

Thirty percent of the time a sale at food shoppe is paid

Thirty percent of the time, a sale at Food Shoppe is paid using a store-issued credit card. A sample of 18 Food Shoppe sales is obtained. Let X represent the number of sales paid for using the store-issued credit card. W ...

  • 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

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro