4) The Chronicle of Higher Education (2009-2010 issue) published the accompanying data on the percentage of the population with a bachelor’s or higher degree in 2007 foreach of the 13 provinces or territories of Canada.

21 27 26 19 30 35 35 26 47 26 39 29 22

(a) Calculate these numerical summaries:

The median:

The interquartile range:

(b) Construct a box plot for these data.

finchco case for corporate finance,

It was late February 2010, and Harry Finch who was president and chief executive officer (CEO) of Finch Distributing Company (Finchco), was thinking about selling his business. At 65 years of age but in excellent health, he wanted to pursue his dream of buying a yacht and sailing around the world. His interest in selling the company had begun in earnest when in late 2007 Finchco had received a $35.4 million offer1 to purchase the company from one of its U.S. suppliers. Unfortunately, at the onset of the financial crisis, the offer was revoked. Since that time, Finchco had experienced a financial reversal related to the downturn of the economy but Finch felt that the company was turning around and had a potential large contract on the horizon. He wondered whether the time was right to offer his firm for sale.

As of 2010, Xerox Corporation (NYSE: XRX) is a $22 billion, multinational company founded in 1906 and operating in 160 countries. Xerox is headquartered in Norwalk, Connecticut, and employs 130,000 people. Such companies depend on the productivity and performance of their employees. The journey over the last 100 years has withstood many successes and failures. In 2000, Xerox was facing bankruptcy after years of mismanagement, piles of debt, and mounting questions about its accounting practices. How does a company of such size and magnitude effectively manage and motivate employees from diverse backgrounds and experiences especially during a crisis?

500 words typed

In 2010, an online security firm estimated that 65% of computer users don't change their passwords very often. Because this estimate may be outdated, suppose that you want to carry out a new survey to estimate the proportion of students at your school who do not change their password. You would like to determine the sample size required to estimate this proportion with a margin of error of 0.05.

(a)

Using 0.65 as a preliminary estimate, what is the required sample size if you want to estimate this proportion with a margin of error of 0.05? (Round your answer up to the nearest integer.)

(b)

How does the sample size in part (a) compare to the sample size that would result from using the conservative value of 0.5? (Round your answer up to the nearest integer.)

The sample size in part (a) [[is smaller than]] the sample size of ___??___computed using the conservative estimate.

(c)

What sample size would you recommend? Justify your answer. (Round your sample size up to the nearest integer.)

The sample size of __??___  should be used for this study because it will guarantee a margin of error of no greater than 0.05. The other sample size computed will only guarantee a margin of error no greater than 0.05 if p > __??__ or if p < __??__

In 2010, researchers recommended a new series of measures be carried out over the next decade to sustain the duck population. After the measures were implemented, the population was expected to be:

?(?) = 3? 3 + 2? 2 − 10? + 600 (0≤ ? ≤ 10)

a) What type of growth is N(t)?

b) Find an expression for N′(t).

c) What was the rate of growth of the Duck population after one year? .

d) What was the rate of growth of the Duck population after five years?

e) How many ducks were in the population in 2019?

In fall 2010, students in my 2 p.m. section of the Introduction to Biological Science I class reported their height
below on the first column of the table, while my 5 p.m. section reported their height on the second column. I
wondered: are the average heights of these two sections significantly different?
Students’ height in
Introduction to Biological
Science I courses (inches)
2 pm 5 pm
70 67
69 61
67 59
62 62
70 62
69 68
66 67
63 68
68 69
63 61
76 69
59 66
62 62
62 62
75 61
62 70
72 58
63 61
Use the data table provided and conduct your calculation on the excel sheet to answer the following questions (DO NOT
use the T.TEST or T.DIST formulas on Excel until it is requested in the questions. Use Average, STDEV, etc. to avoid
rounding error):
(1) Based on the nature of the data, you identify and determine that _____ t-test is the most appropriate test to
evaluate the difference in height between the 2pm and 5pm student populations.
Answer: ___________ (Please answer with a or b only)
a. paired t-test
b. two sample (independent) t-test
(2) The alternative hypothesis is:
Answer: ___________ (Check all that apply) (Please answer with letter a-g only; Please arrange your answer in
alphabetic order with no comma or space in between, for example, ab, bc, abc or abcd)
a. The mean different in height from the 2pm and 5 pm student populations is equal to zero.
b. The mean different in height from the 2pm and 5 pm student populations is NOT zero.
c. The mean different in height from the 2pm and 5 pm student populations larger than zero.
d. Population mean difference in height between the 2pm and 5pm classes µ5pm - µ2pm = 0
e. Population mean difference in height between the 2pm and 5pm classes µ5pm - µ2pm ≠ 0
f. Population mean difference in height between the 2pm and 5pm classes µ5pm - µ2pm > 0
g. Population mean difference in height between the 2pm and 5pm classes µ5pm - µ2pm < 0
(3) Sample size N for the 2pm student population = ___________ (answer whole number only)
Sample size N for the 5pm student population = ___________ (answer whole number only)
(4) Degree of freedom = ___________ (answer whole number only)
(5) calculated t value = ___________ (Please report your answer to 3 decimal places.)

The Internal Revenue Service reports that the mean federal income tax paid in the year 2010 was $8040. Assume that the standard deviation is $4600. The IRS plans to draw a 1000 sample of tax returns to study the effect of new tax law.

A) What is the probability that the sample mean tax is less than $8100? Round the answer to at least four decimal places. The probability that the sample mean tax is less than $8100 is...?

B) What is the probability that the sample mean tax is between $7500 and $8100? Round the answer to at least four decimal places. The probability that the sample mean tax is between $7500 and $8100 is...?

C) Find the 70^th percentile of the sample mean. Round the answer to at least two decimal places.

D) Would it be unusual if the sample mean were less than $7800? Round answer to at least four decimal places. It would/would not be unusual because the probability of the sample mean being less than $7800 is...?

E) Do you think it would be unusual for an individual to pay a tax of less than $7800? Explain. Assume the variable is normally distributed. Round the answer to at least four decimal places. Yes/No, because the probability that an individual pays a tax less than $7800 is...?

] In 2010, Betty White (at age 88!) hosted an episode of Saturday Night Live, becoming the oldest host the show has ever had. Most people know that she was the oldest. However, what about the second oldest? Do people have an idea how old the second oldest guest host was? A random sample of people was taken; these people were asked two questions: what is your age (x) and what do you believe is the age of the second oldest SNL host? Note: the second oldest SNL guest host was Miskel Spillman at age 80 (in 1977) who won a contest and is the only non-celebrity to host the show.

X 25 29 32 37 40 45 47 50 53 60 65

Y 65 72 70 80 75 70 72 73 79 82 80

(a) Draw a scatterplot for this set of data

(b) Find the linear correlation coefficient. Based on that value, is there evidence of a linear relationship between the variables? Explain.

(c) Find the line of best fit. (d) Predict the value of y given the value of x = 40

(e) Find the residual for x = 40.

In February of 2010 the SEC announced a new time line calling for publicly traded companies to switch from GAAP to a different set of accounting standards, called IFRS, by 2015. Now that it is 2017, do some research on the impact this switch will have on US companies. Based on your research, what are the key advantages and major challenges associated with making the proposed switch?

Required: 2 paragraphs outlining the advantages and disadvantages.

For the year 2010, 33% of taxpayers with adjusted gross incomes between $30,000 and $60,000 itemized deductions on their federal income tax return. The mean amount of deductions for this population of taxpayers was $16,642. Assume that the standard deviation is σ = $2,220. If required, round your answer to two decimal places.