Which of the following is a method of presenting a firm's financial statements in percentage terms by dividing every item on the income statement by sales and dividing every item on the balance sheet by total assets?

Multiple Choice

• common-size financial statements

• peer group analysis

• percentage normalization

• common-base year analysis

• industry trend profiling

Is this statement true or false? The effective annual rate is > than the annual percentage rate. Explain your answer.

In 2014, total spending on health as a percentage of GDP was 4.9 percent.

A. True

B. False

C. Uncertain

The price elasticity of demand for cereal is 5 based on this elasticity what will percentage change in quantity of breakfast cereal as a result of 5% decrease in cereal's price? A 5% B 1% C -1% D 25%

Discuss that current state of immigration in the U.S. What percentage of the U.S. population was born outside of the United States?

Availability Rate Metric

The overall availability of an IT resource is usually expressed as a percentage of up-time. For example, an IT resource that is always available will have an up-time of 100%.

• Description – percentage of service up-time

• Measurement – total up-time / total time

• Frequency – weekly, monthly, yearly

• Cloud Delivery Model – IaaS, PaaS, SaaS

• Example – minimum 99.5% up-time

Perform a comparison between the different services provided by the cloud providers (Google GCP, Microsoft Azure, Amazon AWS) state: what cloud delivery model each cloud provider presents and what are the published availability rate metric for each provider.

2.  The percentage of people in a population with a certain ailment (Ailment A) is  7.3%.

a.  If you select a sample of  10 people from this population, what is the probability that at most two of them will have Ailment A ?  

b.  What is the probability that at least 3 of them would have this ailment ?

c.  If you select a sample of  200 people, what is the probability that less than 10 will have ailment A ?  Use the normal approximation technique.

d.  What is the probability, in your sample of  200, that at least  20 will have Ailment A ?

4.  The accumulated miles between repairs for vehicle engines is 24,000 miles with a standard deviation of  2000 miles. The accumulated miles, which have been recorded over time, follow a normal distribution.

a.  Find the probability that an engine you just received will last longer than  26,000 miles.

b.  Find the probability that the mean accumulated mileage from a sample of  10 engines exceeds  26,000 miles.

c.  Find the 1^st, 2^nd, and 3^rdquartiles for the accumulated miles between repairs.

d.  Now, you are looking at vehicle transmissions.  The historical data for transmission mileages indicates a population mean of  16,000 miles with a standard deviation of 2600 miles.  The mileage for transmissions does not follow a normal distribution. Find the probability that, in a large train shipment of  40 transmissions, the average mileage for this sample will be less than  15,000 miles.

e.  If the average for your transmission sample of  40 falls below the bottom  10%, you are going to declare a stand-down of the workforce to determine what is going wrong.  What is the cutoff number of miles for the bottom 10% of your sample average?

f.  Back to the engines . . .  If a single engine is considered a “failure” if it doesn’t accumulate at least 22,000 miles between repairs, what is the chance that an engine will fail to meet its anticipated mileage accumulation?

g.  Given the criteria just stated, what would be the “expected number" of failures in the next 1000 engines that are placed into vehicles?

QUESTION 20

We are interested in looking at the percentage of households that own dogs in the U.S. and England. We are given the following information:

The point estimate for the difference in proportions between people in the U.S. who own dogs and people in England who own dogs is:

What is the p-value for this test if we are interested in testing to see if there is simply a difference in the proportions of people who own dogs in the U.S. and England?

a. The Institute of Education Sciences measures the high school dropout rate as the percentage of 16-through 24-year-olds who are not enrolled in school and have not earned a high school credential. Last year, the high school dropout rate was 8.1%. A polling company recently took a survey of 1,000 people between the ages of 16 and 24 and found that 6.5% of them are high school dropouts. The polling company would like to determine whether the dropout rate has decreased. At a 5% significance level, the p-value and α are _____________________.

• p-value = 0.0318 and α = 0.025

• p-value = 0.0210 and α = 0.025

• p-value = 0.0210 and α = 0.05

• p-value = 0.0318 and α = 0.05

b. A schoolteacher is worried that the concentration of dangerous, cancer-causing radon gas in her classroom is greater than the safe level of 4pCi/L. The school samples the air for 36 days and finds an average concentration of 4.4pCi/L with a standard deviation of 1pCi/L. The value of the test statistic is ___________.

• z = –2.40

• t₃₅ = –2.40

• t₃₅ = 2.40

• z = 2.40

c. The owner of a large car dealership believes that the financial crisis decreased the number of customers visiting her dealership. The dealership has historically had 800 customers per day. The owner takes a sample of 100 days and finds the average number of customers visiting the dealership per day was 750. Assume that the population standard deviation is 350. The value of the test statistic is ____________.

• t₉₉ = –1.429

• t₉₉ = 1.429

• z = 1.429

• z = –1.429

d. The alternative hypothesis typically ___________.

• corresponds to the presumed default state of nature

• states the probability of rejecting the null hypothesis when it is true

• contests the status quo, for which a corrective action may be required

• states the probability of rejecting the null hypothesis when it is false

e. When conducting a hypothesis test concerning the population mean, and the population standard deviation is unknown, the value of the test statistic is calculated as __________.

• tdf=p−−popo(1−po)n√tdf=p−−popo(1−po)n

• z=p−−popo(1−po)n√z=p−−popo(1−po)n

• tdf=x−−μos/n√tdf=x−−μos/n

• z=x−−μoσ/n√

f. When conducting a hypothesis test concerning the population mean, and the population standard deviation is known, the value of the test statistic is calculated as _________.

• z=p−−popo(1−po)n√z=p−−popo(1−po)n

• tdf=x−−μos/n√tdf=x−−μos/n

• z=x−−μoσ/n√z=x−−μoσ/n

• tdf=p−−popo(1−po)n√