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The following are 80 measurements of the daily emissions (in tons) of sulfur dioxide from an industrial plant.
15.8
26.4
17.3
11.2
23.9
24.8
18.7
13.9
9
13.2
22.7
9.8
6.2
14.7
17.5
26.1
12.8
17.6
23.7
26.8
20.5
11
20.9
15.5
16.7
10.7
19.1
15.2
26.6
20.4
21.4
19.2
16.9
19
18.5
23
20.1
16.2
18
7.7
23.5
14.5
18.4
29.6
17
20.8
24.3
22.5
18.1
8.3
21.9
22.3
13.3
11.8
19.3
25.7
31.8
25.9
10.5
27.5
17.9
9.4
28.5
Note. Please consider the measurements: 6.2, 7.7, 8.3, 9.0, 9.8 and any other tens digit as 06.2, 07.7, 08.3, 09.0, and 09.8 respectively so that each measurement is a 3-digit character. Using the first two digits of the measurement as your stem, construct a stem and leaf display of the data above.
Using the display determine the following:
i) The median Q2.
ii) The 1st quartile Q1
iii) The 3rd Quartile Q3
iv) The inter-quartile range, Q3-Q1
Draw a Box and Whisker plot and label completely indicating items i-iv in the plot as well as the lower and upper whiskers and also the outliers and the extreme outliers.
The mean maximum oxygen uptake for elite athletes has been found to be 80 with a standard deviation of 8.1. Assume that the distribution is approximately normal.
Assume the population standard deviation is 1.2 hours. The standard error of the mean is:
A company makes camshafts. The camshaft lengths need to be within a certain tolerance or they will not fit. They have produced x bar and s charts
Would you expect the mean absolute percentage error to be more than or less than 0.25? Describe.
Compute descriptive statistics for each stock and the S&P 500. Comment on your results. Which stocks are the most volatile? Compute the value of beta for each stock. Which of these stocks would you expect to perform best in an up market? Which..
Determining probability values using the Binomial distribution.Use the Binomial distribution to determine the probability that four or more of the contracts are in breach of the tendering guidelines.
It has been evaluated that 30% of all farms are family-owned. In sample of 12 farms, determine the probability that exactly 3 farms are family owned?
A sample of 64 Atlanta consumers showed a mean quarterly water bill of $51 with a sample standard deviation of $12. At α = .05, does the Atlanta sample support the conclusion that above-average rates exist for this private water system?
From Group of 40 People, a jury of 12 people is selected. In how many various ways can a jury of 12 people be selected?
Test whether there is a statistical difference between the two proportions at the 5% significance level.
Use the list of random digits below to assign 4 men and 2 women to the shark fin treatment. Read the table from left to right, first selecting the 4 men and then the 2 women. Use the numerical labels given in the chart to the names.
The Bunte Auto Repair Shop received a shipment of four carburetors. One is known to be defective. If two are selected at random and tested.
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