Applied Statistics and Probability for Engineers 6th Edition solutions

Applied Statistics and Probability for Engineers 6
An article in Technometrics (1977, Vol. 19, p. 425) presented the following data on the motor fuel octane ratings of several blends of gasoline: Construct a stem-and-leaf display for these data. Calculate the median and quartiles of these data.

Applied Statistics and Probability for Engineers 6
For the data in Exercise 6-20, (a) Construct a stem-and-leaf diagram. (b) Do any of the bridges appear to have unusually good or poor ratings? (c) If so, compute the mean with and without these bridges and comment.

Applied Statistics and Probability for Engineers 6
For the data in Exercise 6-21, (a) Construct a stem-and-leaf diagram. (b) Many scientists consider rain with a pH below 5.3 to be acid rain (http://www.ec.gc.ca/eau-water/default.asp? Lang=En&n=FDF30C16-1). What percentage of these samples could be considered as acid rain?

Applied Statistics and Probability for Engineers 6
A back-to-back stem-and-leaf display on two data sets is conducted by hanging the data on both sides of the same stems. Here is a back-to-back stem-and-leaf display for the cloud seeding data in Exercise 6-22 showing the unseeded clouds on the left and the seeded clouds on the right. 6509875443333222

Applied Statistics and Probability for Engineers 6
Problem 28E When will the median of a sample be equal to the sample mean?

Applied Statistics and Probability for Engineers 6
Problem 29E When will the median of a sample be equal to the mode?

Applied Statistics and Probability for Engineers 6
The following data are the numbers of cycles to failure of aluminum test coupons subjected to repeated alternating stress at 21,000 psi, 18 cycles per second. 1115 865 1015 885 1594 1000 1416 1501 1310 2130 845 1223

Applied Statistics and Probability for Engineers 6
The percentage of cotton in material used to manufacture mens shirts follows. Construct a stem-and-leaf display for the data. Calculate the median and quartiles of these data.

Applied Statistics and Probability for Engineers 6
The following data represent the yield on 90 consecutive batches of ceramic substrate to which a metal coating has been applied by a vapor-deposition process. Construct a stem-andleaf display for these data. Calculate the median and quartiles of these data. 94.1 86.1 95.3 84.9 88.8 84.6 94.4 84.1 93.

Applied Statistics and Probability for Engineers 6
Calculate the sample median, mode, and mean of the data in Exercise 6-30. Explain how these three measures of location describe different features of the data.

Applied Statistics and Probability for Engineers 6
Calculate the sample median, mode, and mean of the data in Exercise 6-31. Explain how these three measures of location describe different features in the data.

Applied Statistics and Probability for Engineers 6
Calculate the sample median, mode, and mean for the data in Exercise 6-32. Explain how these three measures of location describe different features of the data.

Applied Statistics and Probability for Engineers 6
The net energy consumption (in billions of kilowatt hours) for countries in Asia in 2003 was as follows (source: U.S. Department of Energy Web site, www.eia.doe.gov/emeu). Construct a stem-and-leaf diagram for these data and comment on any important features that you notice. Compute the sample mean,

Applied Statistics and Probability for Engineers 6
The female students in an undergraduate engineering core course at ASU self-reported their heights to the nearest inch. The data follow. Construct a stem-and-leaf diagram for the height data and comment on any important features that you notice. Calculate the sample mean, the sample standard deviatio

Applied Statistics and Probability for Engineers 6
The shear strengths of 100 spot welds in a titanium alloy follow. Construct a stem-and-leaf diagram for the weld strength data and comment on any important features that you notice. What is the 95th percentile of strength? 5408 5431 5475 5442 5376 5388 5459 5422 5416 5435 5420 5429 5401 5446 5487 541

Applied Statistics and Probability for Engineers 6
An important quality characteristic of water is the concentration of suspended solid material. Following are 60 measurements on suspended solids from a certain lake. Construct a stem-and-leaf diagram for these data and comment on any important features that you notice. Compute the sample mean, the sa

Applied Statistics and Probability for Engineers 6
The United States Golf Association tests golf balls to ensure that they conform to the rules of golf. Balls are tested for weight, diameter, roundness, and overall distance. The overall distance test is conducted by hitting balls with a driver swung by a mechanical device nicknamed Iron Byron after t

Applied Statistics and Probability for Engineers 6
A semiconductor manufacturer produces devices used as central processing units in personal computers. The speed of the devices (in megahertz) is important because it determines the price that the manufacturer can charge for the devices. The following table contains measurements on 120 devices. Constr

Applied Statistics and Probability for Engineers 6
A group of wine enthusiasts taste-tested a pinot noir wine from Oregon. The evaluation was to grade the wine on a 0-to-100-point scale. The results follow. Construct a stemand- leaf diagram for these data and comment on any important features that you notice. Compute the sample mean, the sample stand

Applied Statistics and Probability for Engineers 6
In their book Introduction to Linear Regression Analysis (5th edition, Wiley, 2012), Montgomery, Peck, and Vining presented measurements on NbOCl3 concentration from a tube-low reactor experiment. The data, in gram-mole per liter , are as follows. Construct a stem-and-leaf diagram for these data and

Applied Statistics and Probability for Engineers 6
In Exercise 6-38, we presented height data that were self-reported by female undergraduate engineering students in a core course at ASU. In the same class, the male students self-reported their heights as follows. Construct a comparative stem-and-leaf diagram by listing the stems in the center of the