Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

problem 1: The given table provides scores and sales are nine salesmen during last one year in a certain firm:

Text scores 14 19 24 21 26 22 15 20 19

Sales (in 000'Rupees) 31 36 48 37 50 45 33 41 39

find out the Karl Pearson's Coefficient of Correlation and interpret the result.

x                 y            dx = x-20  dy = y-40    dxdy     dx2                 dy2
14              31                -6            -9           54       36                   81
19              36                -1            -4            4        1                    16
24              48                 4              8            32       16                  64
21              37                 1             -3            3         1                   9
26              50                 6             10            60       36                  100
22              45                 2              5             10        4                  25
15              33                -5             -7             35       25                 49
20              41                 0              1              0         0                  1
19              39                -1             -1             1         1                   1

Σx = 180  Σy = 180                                      Σdxdy = 93  Σdx2 = 120 Σdy2 = 346

problem 2
: Find out the probability of drawing a diamond card in each of consecutive draws from a well shuffled pack of cards, if the card drawn is not replaced after the first draw.

problem 3: A bag contains 5 white, 7 red and 8 black balls. If four balls are drawn one by one without replacement, find out the probability of getting all the white balls.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M9426

Have any Question? 


Related Questions in Statistics and Probability

Suppose amongst all the families on a caribbean cruise the

Suppose amongst all the families on a Caribbean Cruise, the population variance of the number of children per family is 4. If we were to take a sample of 10 families, then the probability is .9 that the sample variance i ...

1 true or false justify for

1. True or False. Justify for fullcredit. (a) A is an event, and Ac is the complement of A, then P(A AND Ac ) =0. (b) If the variance of a data set is 0, then all the observations in this data set must bezero. (c) If a 9 ...

A consumer psychologist asked to test a claim by a swimming

A consumer psychologist asked to test a claim by a swimming school that its instructors could teach the average seven-year-old to swim across an Olympic-sized pool in less than 2 minutes. The psychologist arranged for ei ...

Simple takes about 25 minutes to answer in a study

Simple! (Takes about 25 minutes to answer.) In a study evaluating "Why minority males graduate American high-schools at lower rates than their counterparts", the following is needed: 1) Envisioned Quantitative Design 2) ...

A jury composed of seven members is called upon to find an

A jury composed of seven members is called upon to find an accused individual either guilty or innocent. Debbie is the jury forewoman, with Bobby and Jack appointed vice-foremen. The jury includes four more jurors, in ad ...

A national survey of 40000 adults in the us in 1992 found

A national survey of 40,000 adults in the US in 1992 found that 26% of adults were current smokers. A similar survey of 37,000 adults in the US in 1966 found that 43% of adults were current smokers. Construct a 95% confi ...

At a factory that produces pistons for cars machine 1

At a factory that produces pistons for cars, Machine 1 produced 711satisfactory pistons and 79 unsatisfactory pistons today. Machine 2 produced 630 satisfactory pistons and 270 unsatisfactory pistons today. Suppose that ...

The premise a few years have passed and your survivor group

The premise: a few years have passed, and your survivor group has grown due to the merger with another group of survivors. You still maintain the position as the intellectual of the group because you are a historian.  Al ...

In a prospective study data collected extensive information

In a prospective study, Data collected extensive information on incidence of coronary heart disease (CHD) among smoker and non-smoker individuals. The table below summarizes the results Risk factor Cases of  CHD Non case ...

One thousand people are enrolled in a 10 year cohort study

One thousand people are enrolled in a 10 year cohort study. At the start of the study, 100 have diagnosed CVD. Over the course of the study, 80 people who were free of CVD at baseline develop CVD. What is the cumulative ...

  • 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