Liquid products were first obtained from coal

Assignment Help Applied Statistics

Reference no: EM13862240

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: EM13862240

Questions Cloud

Transmitter sends bits to a receiver across a noisy channe : A transmitter sends bits to a receiver across a noisy channel. The model for the noise is simple: regardless of whether a one or a zero was transmitted, the channel flips the bit with probability p = 0:1. Furthermore, assume that the noise acts on ea..

How does the changing nature of work benefit the employee : How does the changing nature of work benefit (or hinder) the employee?

Let the random variable x have the p.m.f. : Question : Question : Let the random variable X have the p.m.f. f(x) = ((lxl+1)^2) / 9, x=-1,0,1 Compute E(x), E(x^2), and E(3x^2-2x+4).f.

How concepts of power and effects are related to each other : Explain how the concepts of power, effects, and jurisdiction are related to each other. Provide an outline of the ethics of the position taken by Uzi Nissan in this dispute.

Liquid products were first obtained from coal : 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 - re..

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.

User Account

All Pages