Liquid products were first obtained from coal

Assignment Help Applied Statistics
Reference no: EM13862238

1). Liquid products were first obtained from coal in England during the 1700s. Lamp oil was produced from coal in the United States as early as 1850, but the domestic coal chemicals industry did not develop until World War I. A modern coal - for - recovery system uses a battery of coke ovens to produce liquid products from coal feed. These observations are obtained on the random variable X, the number of gallons of liquid product obtained per coal feed: (insert data)

7.6

8.2

7.1

10.0

6.5

9.6

6.1

6.2

7.6

6.2

9.5

6.7

7.4

9.5

9.2

8.0

8.5

9.3

8.8

9.6

9.7

6.8

7.1

7.7

8.7

7.8

8.7

8.2

8.2

7.4

9.0

8.8

7.3

7.9

7.1

7.9

7.6

6.7

8.1

6.2

5.3

7.4

7.7

9.1

7.9

8.7

8.4

8.1

  a). Construct a stem – and – leaf diagram for these data. Use the numbers 5,6,7,8,9,10 as stems.

b). Is the assumption that X is normally distributed justifiable? Explain.

c). Break these data into six categories

d). Construct a frequency table and relative frequency histogram for these data. Does the histogram exhibit the bell – shape characteristics of a normal density?

e). Construct a cumulative frequency table and relative cumulative frequency ogive for these data. Use the ogive to approximate the probability that a randomly selected ton of coal will yield les than 7 gallons of liquid product.

 

2). The observed values of statistics  for the data of the following are 

a). Would you be surprised to hear someone claim that the mean lifespan of the lithium batteries used in this model calculator is 1270 hours? Explain.

b). Find the sample variance and sample standard deviation for these data.

 

3). Consider the following data:

a). Find the mean and median for these data.

b). Find the standard deviation and variance for these data.

c).  What physical measurement unit is associated with each of these statistics in parts (a) and (b)?

Reference no: EM13862238

Previous Q& A

  Charge of establishing economic policy

Consider a small island country whose only industry is printing. Imagine you're in charge of establishing economic policy for the small island country.

  Describe the changes that occurred in virtual communities

Describe the changes that occurred in virtual communities when the bandwidths available to Internet users increased.

  Researchers conducting a clinical trial randomly

Researchers conducting a clinical trial randomly assigned 60 patients with painful kneeosteoarthritis evenly into one of four treatment groups: glucosamine, chondroitin, Celebrex, orplacebo. After the study period, patients were asked if they experie..

  Statement by glenn stevens-governor-monetary policy decision

At its meeting today, the Board decided to leave the cash rate unchanged at 2.0 per cent. The global economy is expanding at a moderate pace, with some further softening in conditions in China and east Asia of late, but stronger US growth. Key comm..

  Define the term spend as it is used in business purchasing

Define the term spend as it is used in business purchasing. Explain how the Internet has reduced the spend of many U.S. manufacturing companies.

  Why life expectancy and good health continue to increase

What are some of the reasons why life expectancy and good health continue to increase in some parts of the world and fail to improve in others?

  Real rate of return on investment

A) Suppose Jean Splicer, an investor, buys $100,000 of shares of stock in a diversified bundle of Bio-tech firms and exactly one year later sells those shares for $108,000. If the value of the CPI at the date of Jean's purchase was 160, and rose b..

  Briefly define the term marketing mix

Briefly define the term marketing mix and distinguish it from the term marketing strategy. Explain how the level of complexity of a product can affect a company's choice of communication modes.

  The environmental protection agency

Suppose the Environmental Protection Agency (EPA) would like to investigate the impact that octane has on gas mileage. The following table shows the gas mileage for six cars that were driven 1,000 miles with three different grades of gasoline: 87, 89..

  Obtain the probability for having two or less

4. The number of inaccurate gauges in a group of four is a binomial random variable s. a) What is the sample space of x (i.e., what values can s take on)? b) If on average 1 of 4 gauges tends to fail, obtain the probabilities for having one and two i..

Reviews

Write a Review

 

Similar Q& A

  What would the mean and the variance equal

Measured the tail lengths of 250 cats, and found that the average length is 28 cm and the variance is 75 cm2. If these tail lengths are normally distributed, (A) what would the mean and the variance equal if we multiplied each tail length by three? (..

  What is the probability that a plane with maximum

On any given flight, an airline's goal is to fill the plane as much as possible without overbooking. If, on average, 10% of customers cancel their tickets, all independently of each other, what is the probability that a particular flight will be o..

  What is the probability that a transaction can be completed

Transactions to a computer database are either new items or changes to previous item. The addition of an item can be completed. if 30% of the transactionss are changes what is the probability that a transaction can be completed in less that 100 milli..

  What research design was used this study

What research design was used this study

  Introductory statistics

A typical adult has an average IQ score of 105 with a standard deviation of 20. If 20 randomly selected adults are given an IQ tesst, what is the probability that the sample mean scores will be between 85 and 125 points?

  Question 1 give illustrations of primary secondary and

question 1 give illustrations of primary secondary and tertiary prevention that will be used to reduce the damage

  Evaluate the probability the sample mean

What can we say about the shape of the distribution of the sample mean?

  Population distribution in order to perform test

Construct and interpret a 95% confidence interval estimate of the difference in the mean measurements in-lineand from an analytical lab.

  What are the tax consequences of the share certificate

Advise John Jones of the tax consequences of Items 1 – 6, above. You should discuss what amounts would be included in his assessable income or, if any item is not assessable income, why that is so. Your answer should include a discussion of the follo..

  A population proportion is to be estimated

A population proportion is to be estimated. Estimated the minimum sample size needed to achieve a margin of error E=0.01 with a 95% degree of confidence.

  What is the average gain of the insurance company

Suppose an insurance company charges $800 per year for a certain health insurance policy with a maximum payout of $20,000 when customer makes a claim. Each year, 3% of the customers submit a claim.What is the average gain of the insurance company per..

  The student government at a university conducted a study

The student government at a university conducted a study

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd