Boomerang Generation - Short Term: In a 2010 Pew Research Center survey, suppose 83 out of 396 randomly selected young adults (ages 18–34) had to move back in with their parents after living alone. In a 2012 survey, suppose 199 out of 808 young adults had to move back in with their parents. The table below summarizes this information. The standard error (SE) is given to save calculation time if you are not using software.
Data Summary:
| number who | total number | Proportion | |
| Year | moved back (x) | in survey (n) | p̂ = (x/n) |
| 2012 | 199 | 808 | 0.24629 |
| 2010 | 83 | 396 | 0.20960 |
SE = 0.02598
The Test: Test the claim that a greater
proportion of all young adults moved back in with their parents in
2012 than in 2010. Use a 0.05 significance level.
(a) Letting p̂1 be the proportion of young adults that had to move back in with their parents in 2012 and p̂2 be the proportion from 2010, calculate the test statistic using software or the formula
z =
| (p̂1 − p̂2) − δp |
| SE |
where δp is the hypothesized
difference in proportions from the null hypothesis and the standard
error (SE) given with the data. Round your answer
to 2 decimal places.
z =
To account for hand calculations -vs- software, your answer
must be within 0.01 of the true answer.
(b) Use software or the z-table to get the P-value of the test
statistic. Round to 4 decimal places.
P-value =
(c) What is the conclusion regarding the null hypothesis?
reject H0
fail to reject H0
(d) Choose the appropriate concluding statement.
The data supports the claim that a greater proportion of all young adults moved back in with their parents in 2012 than in 2010.
There is not enough data to support the claim that a greater proportion of all young adults moved back in with their parents in 2012 than in 2010.
We have proven that a greater proportion of all young adults moved back in with their parents in 2012 than in 2010.
We reject the claim that a greater proportion of all young adults moved back in with their parents in 2012 than in 2010.
In: Statistics and Probability
4. There is data for you in the tab called EComSales. It comes from the Federal Reserve and represents quarterly e-commerce sales data in the U.S. for Quarter 4, 1999 to Quarter 4, 2019. Month 1=Q1, Month 4=Q2, Month 7=Q3, Month 10 = Q4. Run a regression forecasting sales for all 4 quarters in 2020. Print your regression results in a new tab. Rename that tab Answer Q4. In that cells below your regression results, forecast sales for Q1:2020, Q2:2020, Q3:2020, and Q4:2020. Round all answers to the nearest dollar in Excel and put a comma in so I can read it easier (do not round by hand or put the comma in by hand– set up excel to do the rounding and the comma for you).
IT IS NOT LETTING ME POST CORRECTLY, THE COLUMN OF 5553 IS FOR Q1, THE 6059 FOR Q2, THE 6892 FOR Q3 AND THE 5241 FOR Q4
| Year | Years since 1999 (X) | Q1 | Q2 | Q3 | Q4 | |
| 1999 | 0 | 5241 | ||||
| 2000 | 1 | 5553 | 6059 | 6892 | 9104 | |
| 2001 | 2 | 7923 | 7816 | 7737 | 10784 | |
| 2002 | 3 | 9621 | 10076 | 10760 | 14166 | |
| 2003 | 4 | 12358 | 12973 | 13909 | 17915 | |
| 2004 | 5 | 16201 | 16502 | 17371 | 22523 | |
| 2005 | 6 | 20142 | 20953 | 22171 | 28121 | |
| 2006 | 7 | 25490 | 25817 | 26892 | 35135 | |
| 2007 | 8 | 30403 | 31589 | 32352 | 42126 | |
| 2008 | 9 | 34270 | 34260 | 33486 | 39576 | |
| 2009 | 10 | 32284 | 32924 | 34494 | 45805 | |
| 2010 | 11 | 37059 | 38467 | 40075 | 54320 | |
| 2011 | 12 | 44243 | 45426 | 46159 | 64435 | |
| 2012 | 13 | 51722 | 52542 | 53832 | 73827 | |
| 2013 | 14 | 58355 | 60181 | 61344 | 83766 | |
| 2014 | 15 | 66148 | 69715 | 71331 | 95830 | |
| 2015 | 16 | 75918 | 79916 | 81769 | 109362 | |
| 2016 | 17 | 86811 | 91969 | 93830 | 124697 | |
| 2017 | 18 | 99805 | 107094 | 108905 | 145230 | |
| 2018 | 19 | 115602 | 122934 | 124214 | 160894 | |
| 2019 | 20 | 129015 | 139647 | 145833 | 187252 |
PLEASE EXPLAIN STEP BY STEP AND PUT EXCEL FORMULAS! THANK YOU
In: Statistics and Probability
Let's assume you just received a check out of nowhere that is enough to pay the downpayment and closing costs for a house. Assuming your career as a Financial Analyst for a bank earned $75,350 in 2010 and has increased at the rate of inflation.
All calculations must be done in Excel, input each number only once, in other words, use Excel functions and formulas and let Excel do the math.
Only need answers to 5 and 6. |
In: Finance
. Determine whether K4 (the complete graph on 4 vertices contains the following: i) A walk that is not a trail. ii) A trail that is not closed and is not a path. iii) A closed trail that is not a cycle.
In: Advanced Math
Prove the converse of Theorem 3.3.4 by showing that if a set K ⊆ R is closed and bounded, then it is compact.
Theorem 3.3.4 A set K ⊆ R is compact if and only if it is closed and bounded.
In: Advanced Math
describe how a closed circulatory system delivers oxygen and nutrients and picks up waste and carbon dioxide. What types of organisms use a closed circulatory system?
In: Nursing
In the given circuit an inductor of L = 8.95-mH and a resistor of R = 17.9-Ω resistor are connected in series with a dc battery of E = 8.80-V.
What is the voltage across the resistor immediately after the switch is closed?
What is the voltage across the resistor after the switch has been closed for a long time?
What is the current in the inductor after the switch has been closed for a long time?
In: Physics
Van Hatten Consolidated has three operating divisions: DeMent
Publishing Division, Ankiel Security Division, and Depp Advisory
Division. Each division maintains its own accounting system but
follows IFRS.
| DeMent Publishing Division The DeMent Publishing Division sells large volumes of novels to a few book distributors, which in turn sell to several national chains of bookstores. DeMent allows distributors to return up to 30% of sales, and the distributors give the same terms to bookstores. While returns from individual titles fluctuate greatly, the returns from distributors have averaged 20% in each of the past five years. A total of $7 million of paperback novel sales were made to distributors during fiscal 2020. On November 30, 2020 (the end of the fiscal year), $1.5 million of fiscal 2020 sales were still subject to return privileges over the next six months. The remaining $5.5 million of fiscal 2020 sales had actual returns of 21%. Sales from fiscal 2019 totalling $2 million were collected in fiscal 2020 less 18% returns. This division records revenue according to the revenue recognition method when the right of return exists. |
| Ankiel Security Division The Ankiel Security Division works through manufacturers’ agents in various cities. Orders for alarm systems and down payments are forwarded from agents, and the division ships the goods f.o.b. factory directly to the customers (usually police departments and security guard companies). Customers are billed directly for the balance due plus actual shipping costs. The company received orders for $6 million of goods during the fiscal year ended November 30, 2020. Down payments of $600,000 were received, and $5.2 million of goods were billed and shipped. Actual freight costs of $100,000 were also billed. Commissions of 10% on product price are paid to manufacturing agents after goods are shipped to customers. Such goods are covered by the warranty for 90 days after shipment, and warranty claims have been about 1% of sales. Revenue is recognized at the point of sale by this division. |
| Depp Advisory Division The Depp Advisory Division provides asset management services. This division grew out of Van Hatten’s own treasury and asset management operations, which several of its customers asked to have access to. On January 1, 2020, Depp entered into a contract with Scutaro Co. to perform asset management services for one year. Depp receives a quarterly management fee of 0.25% on Scutaro’s assets under management at the end of each quarter. In addition, Depp receives a performance-based incentive fee of 20% of the fund’s annual return in excess of the return on the S&P 500 index at the end of the year. At the end of the first quarter of 2020, Depp was managing $2.4 million of Scutaro assets. The annualized return on the portfolio was 6.2%. (The S&P 500 index had an annualized return of 5.7%.) |
(a)
For each division’s revenue arrangements, identify the separate
performance obligations, briefly explain the allocation of the
transaction process to each performance obligation, and indicate
when the performance obligations are satisfied.
In: Accounting
In Python
iOverlap (a1, a2, b1, b2)
Write the function iOverlap that tests whether 2 closed intervals overlap. It takes 4 numbers (ints or floats) a1, a2, b1, b2 that describe the two closed intervals [a1,a2] and [b1,b2] of the real number line, and returns True if these two closed intervals overlap (even if at only one point) and False otherwise. If a1>a2, then the interval [a1,a2] is empty. If b1>b2, then the interval [b1,b2] is empty. Both intervals are closed, so contain their endpoints. For example, the intervals [1,2] and [2,3] overlap at the point 2.
In: Computer Science