Determining the covariance

Assignment Help Basic Statistics

Reference no: EM1316824

Q1) The table given below shows joint probability distribution of X and Y. Determine the covariance between the X and Y?

			X
		0	1	2
	0	0.13	0.08	0.021
Y	1	0.16	0.14	0.03
	2	0.07	0.04	0.13

a) 0.29

b) 0.23

c) 0.25

d) 0.21

Q2) Probability a person catches cold in the cold and flu season is 0.4. Suppose that 10 people are selected at random.

i) Determine the probability that exactly four of them will catch cold?

a) 0.751

b) 0.502

c) 0.242

d) 0.251

ii) Determine the probability that 4 or more of them will catch a cold?

a) 0.715

b) 0.618

c) 0.546

d) 0.312

iii) On average, how many of these 10 people would you expect to catch cold?

a) 4

b) 3

c) 2

d) 1

iv) Compute the standard deviation for number of people catching a cold?

a) 1.245

b) 1.265

c) 1.549

d) 1.125

Reference no: EM1316824

Questions Cloud

Determining the companys checkbook or ledger : The subcontractor says that original check was for only $10,750. Jonathan looks around office however was not able to determine the company checkbook or ledger.

Purpose of extracting the organic layer : Sketch Flow diagram and explain the extraction process - What is the purpose of extracting the organic layer with water in the first extraction step?

Problem on profit & loss : Problem on profit & loss

Describe the major absorption bands in the ir spectrum : Describe the major absorption bands in the IR spectrum - indicate the bonds responsible for those peaks which prove you have synthesized isopentyl acetate and that it is an ester.

Determining the covariance : The table given below shows joint probability distribution of X and Y . Determine the covariance between the X and Y ?

Questions on h-nmr spectrum of isopentyl acetate : Questions on H-NMR spectrum of isopentyl acetate - What would the effect on yield be of allowing the crushed Dry Ice to be exposed to the atmosphere for long periods of time before being used?

Determining occurance as incident or disaster : Categorize the following occurrences as an incident or disaster. If an occurrence is a disaster, find whether or not business continuity plans would be called into play.

Probability of receiving more than three pieces of mail : What is the probability of receiving more than three pieces of junk mail today?

Find the mass of snow : Determine the mass of snow that can be completely melted - Determine the mass of snow (frozen water) that can be completely melted with the application

User Account

All Pages