# Statistics Question

Section 6.2(Problem 1)

Section 6.3(Problem 7)

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Section 6.4(Problem 2)

Solve the following using Minitab only

Section 6.6 (Problem 2)

Section 6.7(Problem 1,5)

Reserve Problem Chapter 6 Section 2 Problem 1

An independent research was made to calculate the mean weight of elder people in Russia. 50 men and women were interviewed for this research. Construct a stem-and-leaf diagram for the data. Calculate the median and quartiles of these data. All values are in kg.

Reserve Problem Chapter 6 Section 3 Problem 7

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 the legendary great Byron Nelson, whose swing the machine is said to emulate. Following are 100 distances (in yards) achieved by a particular brand of golf ball in the overall distance test.

Construct a frequence distribution for these data. Use 13 bins.

Select the correct histogram.

Does it convey the same information as the prsented stem-and-leaf display for this data?

Reserve Problem Chapter 6 Section 4 Problem 2

The weather forecast for New York for the period from 1 May 2017 to 15 May 2017 represents the following set of maximal temperatures in

?F: 75, 71, 61, 59, 64, 61, 62, 59, 62, 65, 65, 65, 68, 72, 72.

a. Calculate the sample mean, sample variance, and standard deviation.

b. Find the median and quartiles for the data.

c. Construct a box plot of the data. Find the interquartile range and determine the number of outliers.

Solve the following using Minitab only

Reserve Problem Chapter 6 Section 6 Problem 2

An article in Technometrics by S. C. narula and J. F. Wellington [“Prediction, Linear Regression, and a Minimum Sum of Relative Errors” (1977, Vol. 19)] presents data on the selling price and annual taxes for 24 houses. The data are shown in the following table.

a. Select the correct scatterplot.

b. Comment on the widely held belief that price is related to taxes paid.

c. What is the simple correlation coefficient between these two variables?

Reserve Problem Chapter 6 Section 7 Problem 1

The following data are the numbers of cakes sold by a bakery on different days:

234, 246, 214, 267, 253, 220, 259, 264, 240, 251, 230, 247, 255.

Choose the correct normal probability plot of this data:

Does it seem reasonable to assume that the number of cakes sold is normally distributed?

Reserve Problem Chapter 6 Section 7 Problem 5

The following data are the joint temperatures of the O-rings (?F) for each test firing or actual launch of the space shuttle rocket motor (from Presidential Commission on the Space Shuttle Challenger Accident, Vol. 1, pp. 129–131): 84, 49, 61, 40, 83, 67, 45, 66, 70, 69, 80, 58, 68, 60, 67, 72, 73, 70, 57, 63, 70, 78, 52, 67, 53, 67, 75, 61, 70, 81, 76, 79, 75, 76, 58, 31.

Select the correct normal probability plot of the O-ring joint temperature data.

Does it seem reasonable to assume that O-ring joint temperature is normally distributed?

Solve the following manually and using Minitab
Section 6.2(Problem 1)
Section 6.3(Problem 7)
Section 6.4(Problem 2)
Solve the following using Minitab only
Section 6.6 (Problem 2)
Section 6.7(Problem 1,5)
Reserve Problem Chapter 6 Section 2 Problem 1
An independent research was made to calculate the mean weight of elder people in Russia. 50 men and
women were interviewed for this research. Construct a stem-and-leaf diagram for the data. Calculate
the median and quartiles of these data. All values are in kg.
Reserve Problem Chapter 6 Section 3 Problem 7
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 the legendary
great Byron Nelson, whose swing the machine is said to emulate. Following are 100 distances (in yards)
achieved by a particular brand of golf ball in the overall distance test.
Construct a frequence distribution for these data. Use 13 bins.
Select the correct histogram.
Does it convey the same information as the prsented stem-and-leaf display for this data?
Reserve Problem Chapter 6 Section 4 Problem 2
The weather forecast for New York for the period from 1 May 2017 to 15 May 2017 represents the
following set of maximal temperatures in
∘F: 75, 71, 61, 59, 64, 61, 62, 59, 62, 65, 65, 65, 68, 72, 72.
a. Calculate the sample mean, sample variance, and standard deviation.
b. Find the median and quartiles for the data.
c. Construct a box plot of the data. Find the interquartile range and determine the number of outliers.
Solve the following using Minitab only
Reserve Problem Chapter 6 Section 6 Problem 2
An article in Technometrics by S. C. narula and J. F. Wellington [“Prediction, Linear Regression, and a
Minimum Sum of Relative Errors” (1977, Vol. 19)] presents data on the selling price and annual taxes for
24 houses. The data are shown in the following table.
a. Select the correct scatterplot.
b. Comment on the widely held belief that price is related to taxes paid.
c. What is the simple correlation coefficient between these two variables?
Reserve Problem Chapter 6 Section 7 Problem 1
The following data are the numbers of cakes sold by a bakery on different days:
234, 246, 214, 267, 253, 220, 259, 264, 240, 251, 230, 247, 255.
Choose the correct normal probability plot of this data:
Does it seem reasonable to assume that the number of cakes sold is normally distributed?
Reserve Problem Chapter 6 Section 7 Problem 5
The following data are the joint temperatures of the O-rings (∘F) for each test firing or actual launch of
the space shuttle rocket motor (from Presidential Commission on the Space Shuttle Challenger Accident,
Vol. 1, pp. 129–131): 84, 49, 61, 40, 83, 67, 45, 66, 70, 69, 80, 58, 68, 60, 67, 72, 73, 70, 57, 63, 70, 78,
52, 67, 53, 67, 75, 61, 70, 81, 76, 79, 75, 76, 58, 31.
Select the correct normal probability plot of the O-ring joint temperature data.
Does it seem reasonable to assume that O-ring joint temperature is normally distributed?
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Reserve Problems
The following problems have been reserved for your use in assignments and testing and do not
appear in student versions of the text. Those marked with a WileyPLUS icon have been authored
for assignment and automatic grading in WileyPLUS.
WP Problem available in WileyPLUS at instructor’s discretion.
Chapter 2 Exercises
Exercises for Section 2.1
k
. WP Reserve Problem Chapter 2 Section 1 Problem 1
Determine the sample space for the following random experiment. It is known that the delivery time is within 10 to 46 hours.
Consider an experiment that records the time from an order until
the shipment arrives.
. WP Reserve Problem Chapter 2 Section 1 Problem 2
Consider an experiment that records the number of bushels (and
fractions of bushels) of corn produced in an acre. The yield is
assumed to be between 130 and 230 bushels. Determine the corresponding sample space.
. WP Reserve Problem Chapter 2 Section 1 Problem 3
Consider an experiment that records the error (diﬀerence)
between the actual and estimated quarterly revenue of a corporation. Determine the corresponding sample space.
. WP Reserve Problem Chapter 2 Section 1 Problem 4
A conceptual smartphone design uses a parachute technique to
avoid severe damage to the screen and phone-case. Each of four
nozzles located on the case might be either functional or defective
after a year.
a. Describe the sample space in terms of the condition (functional or defective) of each nozzle after a year. Let “F”
denote a functional nozzle after a year and “D” denote a
defective one.
b. How many outcomes are in the event deﬁned by two defective nozzles?
. WP Reserve Problem Chapter 2 Section 1 Problem 5
Let X denote the grams of gold obtained in a ton of ore. Consider
b. P(X > x) = 0.95
c. P(x < X < 9) = 0.2 d. P(3 < X < x) = 0.95 e. P(−x < X − 7 < x) = 0.99 . WP Reserve Problem Chapter 4 Section 5 Problem 5 The ﬁll volume of an automated ﬁlling machine used for ﬁlling cans of carbonated beverage is normally distributed. Suppose, that the mean of t...

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