Question

A)The data were collected in a study conducted in a semiconductor manufacturing plant. In this plant the finished semiconductor is wire bonded to a frame. The goal of the study was to relate a pull strength to a wire length and a die height. The variables obtained for each subject were a pull strength (a measure of the amount of force required to break a bond), a wire length, and a height of a die. What is the type of these data?

B)The data on various characteristics of subdivisions that could be used in deciding whether to provide electrical power using overhead lines or underground lines was obtained. The values of the variable “total length of streets within a subdivision”
(in feet) are provided below.
1280 1050 1320 1200 3150 3100 1500 5320 360 530 1120 5700 2730
240 4390 3330 3350 2120 5200 1670 396 2100 3380 540 450 500
100 1419 1240 340 3870 2250 1850 4580 2109 3060 1000 1250 2320
2460 3150 4770 960 2400 2400 4120 1890

B1)Use MINITAB to construct a histogram with class boundaries 0, 1000, 2000, 3000,
4000, 5000, 6000 and percentages. (Hint: pointing on a bar shows percentage and
class boundaries for this bar). (Zero credit if for histogram not made by MINITAB).

B2)What percentage of subdivisions have total streets length less than 3,000 feet?
(Round your answer to 2 places after the decimal point).

B3)What percentage of subdivisions have total streets length of 6,000 feet or more?
(Round your answer to 2 places after the decimal point).

B4)Describe the shape of the distribution of these data.

C)The data on the accompanying specific gravity values for various wood types used in construction is provided below.
0.31, 0.97, 0.36, 0.66, 0.48 0.51, 0.47, 0.62, 0.35, 0.54, 0.41, 0.55, 0.42, 0.58, 0.42, 0.67, 0.44, 0.90, 0.40, 0.36, 0.42, 0.38, 0.54, 0.45.

C1)Construct a stem-and-leaf display of these data.

C2)Based on your stem-and-leaf display answer the following questions. What is the range of these data? What is the most common value? List all values between 0.54 and 0.66 (inclusive). Describe the shape of the distribution of these data.

D)Minimum injection pressure (in psi) for injection molding specimens of high amylose corn was determined for eleven different specimens (higher pressure corresponds to greater processing difficulty), resulting in the following observations: 27, 16, 12, 20, 14, 15, 13, 9, 7, 17, 26. Answer the following questions. (Round your answers to 2 places after the decimal point, specify measurement units).

D1)Calculate a) mean, b)median, c)mode,d) sample interquartile range, e) standard deviation f) By how much could the largest observation in this sample be decreased without
affecting the value of the sample median?

E)The study reported the following data on oxidation induction time (in minutes) for various commercial oils: 130, 180, 105, 142, 138, 81, 99. Answer the following questions. (Round your answers to 2 places after the decimal point, specify measurement units).

E1) calculate a) mean, b)median, ,c)variance, d) standard deviation

E2)If the observations were re-expressed in hours, what would be the resulting values
of the sample mean, sample median, sample variance and sample standard
deviation? Answer without performing the re-expression of the observations.Calculate a) mean, b)median, ,c)variance, d) standard deviation

F) Grip is applied to produce normal surface forces that compress the object being gripped. Examples include two people shaking hands, or a nurse squeezing a patient’s forearm to stop bleeding, etc. The data on grip strength (in Newtons (N)) for a sample of 38 individuals is displayed in the box plot provided below.
Q1=104, median=150, Q3=230, whickers to: 30 and 329 $BdKWZcAAAAASUVORK5CYII=$

Based on this box plot answer the following questions. Explain your reasoning for parts b. and c.
a. What is the range of these data?
Answer: ____________________________________________________________
b. Classify the outliers as mild or extreme.
Answer: ____________________________________________________________
c. How large or small does an observation have to be to qualify as an extreme outlier?

G)Identify the type of the following variables and fill in the provided table.

Variable	Type	Catergories/Measurement units
Country of Birth
Fuel effeciancy of a vehicle
Blood type
lifetime of a battery

Answer 1