A certain retail store bases its staffing on the number of customers that arrive during certain time slots. Based on prior experience this store expects 32% of its customers between 8:00 am and 12:00 pm; 21% of its customers between 12:00 pm and 4:00 pm; 35% of its customers between 4:00 pm and 8:00 pm; and 12% of its customers between 8:00 pm and midnight. On a certain day, the store had 214, 198, 276, and 134 customers in those time slots, respectively. Should the store change its staffing? (Consider an alpha of 0.05.)

Solution:

Ho: The expected values match the observed values
Ha: The expected values do not match the observed values assign(“exp”,c(32,21,35,12)) assign(“obs”,c(214,198,276,134))
sum((obs-exp)^2/exp) = 5426.773
1-pchisq(5426.773,3) = 0
p < alpha, therefore RHo: the store should change its staffing.

What was wrong with this solution?

Suppose you are now a Founder and CEO of Rent the Dresses, Inc., an online rental site for premium dresses primarily for women. Because the business is a start-up, there is no accountant on the management team yet, so you have been doing the accounting. You notice that an average of 100,000 visitors come to your website, of which 60% browse through the website. 20% of them register and put at least one item in the shopping cart. One out of three registered customers actually checkout and pay for the items. Calculate the following (and show your work for partial credit!) a. Bounce rate b. Conversion rate c. Average monthly revenue, assuming AOV is $200.

Elaborate KNM GROUP by the Acquisitions of 2004 onwards.

6) Evidence on IPO underpricing is provided in several empirical studies, including a seminal paper by Loughran and Ritter (2004). 7) On average, IPOs traded at a premium and one reason can be underpricing of IPO at the offer time. Briefly discuss whether this result is consistent with previous empirical studies (Loughran and Ritter (2004)about IPO traded at premium if they were underpriced at offer time.

The marketing team at an internet music site wants a better understanding of who their customers are. They send out a survey to 25 customers​ (and use an incentive of​ $50 worth of downloads to guarantee a high response​ rate) asking for demographic information. One of the variables is the​ customer's age. For the 25​ customers, the ages are shown to the below. Complete parts​ a) through​ d).

19 , 30 , 39 , 26 , 36 , 32 , 31 , 22 , 23 , 43 , 35 , 13 , 44 , 31 , 44 , 29 , 28 , 47 , 36, 44 , 31 , 12 , 27 , 33 , 47

a)Find the quartiles Q1 & Q2

​b)Find the quartiles Q1 & Q2 using the Tukey method.

​c)Find the IQR using the quartiles from part b.

d)Find the standard deviation.

What can we say about winning percentage and coach's salary as contributors to "Revenue"? Select one: a. Surprisingly, coach's salary has a positive impact on revenue, while winning percentage has a negative impact. b. As would be expected, winning percentage has a positive effect, and coach's salary impact is negative. c. Both winning percentage and coach's salary have a positive impact on revenue. d. More data is needed to conduct a meaningful analysis. e. Answer pending

What is the error of estimation for Alabama’s revenue?

Select one:

a. 4.1 Million

b. 10.6 Million

c. 8.3 Million

d. 0

e. Cannot be determined.

Source: Developing academic language with the SIOP Model, by Short and Echevarría

1.     On page 27, Short and Echevarría offer examples of verbal scaffolding. explain three scaffolds why they are important. (p. 27)

2.      What are the four categories of language objectives? please explain each category. (pp. 42-43)

4. A small airport has flights to only two cities, A and B. Suppose they get an average of 40 customers per
hour who want to fly to city A and 30 customers per hour who want to fly to city B. If these are independent
Poisson processes, then find the probability that
a) (3 pts) there are 7 or more customers who want to fly to city A in the next 6 minutes. Give your answer
to three decimal places.
b) (3 pts) 5 out of the next 8 customers want to fly to city A. Give your answer to three decimal places.
c) (3 pts) if 15 customers who want to fly to city B arrive in the next 30 minutes, then find the probability
that exactly four of them arrived in the first 5 minutes. Give your answer to three decimal places.

Please use ONLY one Excel file to complete this case study, and use one spreadsheet for each problem.

1. Develop a linear regression model to predict Wal-Mart revenue, using CPI as the only independent variable.
2. Develop a linear regression model to predict Wal-Mart revenue, using Personal Consumption as the only independent variable.
3. Develop a linear regression model to predict Wal-Mart revenue, using Retail Sales Index as the only independent variable.
4. Which of these three models is the best?  Use R-square values, Significance F values, p-values and other appropriate criteria to explain your answer.
5. Generate a scatter plot, residual plot and normal probability plot for the best model in part (d) and comment on what you see.

Identify and remove the five cases corresponding to December revenue.

6. Develop a linear regression model to predict Wal-Mart revenue, using CPI as the only independent variable.
7. Develop a linear regression model to predict Wal-Mart revenue, using Personal Consumption as the only independent variable.
8. Develop a linear regression model to predict Wal-Mart revenue, using Retail Sales Index as the only independent variable.
1. Which of these three models is the best?  Use R-square values and Significance F values to explain your answer.
10. Generate a scatter plot, residual plot and normal probability plot for the best model in part (i) and comment on what you see.
11. Comparing the results of parts (d) and (i), which of these two models is better? Use R-square values, Significance F values, p-values, scatter plot, residual plot and normal probability plot to explain your answer.

On October 1, 2021, a company sells $800 of gift cards to customers. The gift cards expire one year from the date of sale. By October 1, 2022, $750 of the gift cards have been redeemed and the sales recorded at the time of redemption. What entry, if any, should the company record on October 1, 2022?

A) Debit Sales Revenue, $50; credit Cash, $50. B) Debit Cash, $750; credit Sales Revenue, $750. C) Debit Deferred Revenue, $50; credit Sales Revenue, $50. D) No journal entry is necessary.