Here are the returns on two stocks.
Digital Cheese Executive Fruit January +19 +9, February −2 +1, March +4 +4, April +6 +13, May −3 +1, June +3 +5, July −1 −2, August −7 −1
a-1. Calculate the variance and standard deviation of each stock. (Do not round intermediate calculations. Round your answers to 2 decimal places.)
a-2. Which stock is the riskier if held on its own?
Digital Cheese
Executive Fruit
b.Now calculate the returns in each month of a portfolio that invests an equal amount each month in the two stocks. (Negative amounts should be indicated by a minus sign. Do not round intermediate calculations. Round your answers to 2 decimal places.)
c. Is the standard deviation more or less than half way between the variance of the two individual stocks?
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In: Finance
This is a 5 number summary for the number of children born.
| min | 1st Qart | Median | Mean | 3rd Quar | Max |
|---|---|---|---|---|---|
| 0.00 | 1.00 | 3.00 | 3.261 | 4.00 | 16.00 |
Explain why it would be inappropriate to conduct a chi square test for contraceptive method and number of children ever born. Hint look at the output for the following R command (table(dat3$contrMethod, dat3$noKids))
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 16 | |
| 1 | 95 | 143 | 114 | 70 | 57 | 44 | 35 | 18 | 29 | 5 | 9 | 6 | 4 | 0 | 0 |
| 2 | 0 | 46 | 56 | 70 | 62 | 36 | 27 | 19 | 9 | 3 | 2 | 2 | 0 | 1 | 0 |
| 3 | 2 | 87 | 106 | 119 | 78 | 55 | 30 | 12 | 9 | 8 | 0 | 3 | 0 | 1 | 1 |
In: Statistics and Probability
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Q2. Suppose you are investigating the factors that affect college GPA. You perform a survey, and the data are contained in the Excel data file GPA_Survey.xlsx and then regress GPA on hours studied, work, video game, texts, and male.
1) Suppose you think that you have omitted an important variable, ability, which is correlated with many of your independent variables. What are the consequences of this omission on the coefficient estimates and hypothesis tests?
2) Perform the same regression that you did in part 1), but then add the additional variable, eye color. What are the consequences of including this irrelevant variable on your coefficient estimates and hypothesis tests?
3) Would you rather omit a relevant variable such as ability or include an irrelevant variable such as eye color? Explain your reasoning.
In: Economics
True or False? The data in the table below depict y as an exactly exponential function of x.
| x | -2 | -1 | 0 | 1 | 2 | 3 | 4 | 5 |
| y | 9375 | 1875 | 375 | 75 | 15 | 3 | 0.6 | 0.12 |
In: Advanced Math
identify the equation . If it is a parabola, give its vertex, focus, and directrix; if an ellipse, give its centre, vertices, and foci ; if a hyperbola, give its centre, vertices, foci, and asymptotes.
(x + 1)^2/4 - y^2/9−=1
In: Math
Write a differential equation in wich \( y^2=4(t+1) \) is a solutiion.
In: Advanced Math
In: Statistics and Probability
Which of the following is a reconciling item on the bank side of a bank reconciliation?
| 1. |
Cancelled cheques |
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| 2. |
Outstanding cheques |
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| 3. |
both outstanding cheques and NSF cheques |
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| 4. |
NSF cheques |
A cheque returned by a bank because the issuer's cash account balance could not cover the cheque is called:
| 1. |
a blank cheque |
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| 2. |
a certified cheque |
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| 3. |
a NSF cheque |
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| 4. |
an outstanding cheque |
On 1 January, Bochao Properties establishes a petty cash fund for $200.
On 31 January, the fund's custodian prepares a petty cash report showing $130 in cash remaining and receipts for $12 for miscellaneous items, $20 for postage and $35 for supplies.
The accountant replenishes the fund on 31 January.
When making the journal entry on 31 January, what is the CREDIT?
| 1. |
Petty Cash $67 |
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| 2. |
Cash $70 |
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| 3. |
Petty Cash $70 |
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| 4. |
Petty Cash $67 |
Thanks for your help!
In: Accounting
Problem 1 (3 + 3 + 3 = 9) Suppose you draw two cards from a deck of 52 cards without replacement. 1) What’s the probability that both of the cards are hearts? 2) What’s the probability that exactly one of the cards are hearts? 3) What’s the probability that none of the cards are hearts?
Problem 2 (4) A factory produces 100 unit of a certain product and 5 of them are defective. If 3 units are picked at random then what is the probability that none of them are defective?
Problem 3 (3+4=7) There are 3 bags each containing 100 marbles. Bag 1 has 75 red and 25 blue marbles. Bag 2 has 60 red and 40 blue marbles. Bag 3 has 45 red and 55 blue marbles. Now a bag is chosen at random and a marble is also picked at random. 1) What is the probability that the marble is blue? 2) What happens when the first bag is chosen with probability 0.5 and other bags with equal probability each?
Probem 4 (3+3+4=10) Before each class, I either drink a cup of coffee, a cup of tea, or a cup of water. The probability of coffee is 0.7, the probability of tea is 0.2, and the probability of water is 0.1. If I drink coffee, the probability that the lecture ends early is 0.3. If I drink tea, the probability that the lecture ends early is 0.2. If I drink water, the lecture never ends early. 1) What’s the probability that I drink tea and finish the lecture early? 2) What’s the probability that I finish the lecture early? 3) Given the lecture finishes early, what’s the probability I drank coffee?
Problem 5 (4+4+4=12) We roll two fair 6-sided dice. Each one of the 36 possible outcomes is assumed to be equally likely. 1) Find the probability that doubles were rolled. 2) Given that the roll resulted in a sum of 4 or less, find the conditional probability that doubles were rolled. 3) Given that the two dice land on different numbers, find the conditional probability that at least one die is a 1. Problem 6 (8) For any events A, B, and C, prove the following equality: P(B|A) P(C|A) = P(B|A ∩ C) P(C|A ∩ B)
In: Math
Problem 4-15A Comprehensive Problem-Weighted-Average Method [LO4-2, LO4-3, LO4-4, LO4-5]
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Sunspot Beverages, Ltd., of Fiji makes blended tropical fruit drinks in two stages. Fruit juices are extracted from fresh fruits and then blended in the Blending Department. The blended juices are then bottled and packed for shipping in the Bottling Department. The following information pertains to the operations of the Blending Department for June. |
|
Percent Completed |
|||
| Units | Materials | Conversion | |
| Work in process, beginning | 46,000 | 70% | 40% |
| Started into production | 248,000 | ||
| Completed and transferred out | 238,000 | ||
| Work in process, ending | 56,000 | 75% | 25% |
| Materials | Conversion | |||
| Work in process, beginning | $ | 15,100 | $ | 4,400 |
| Cost added during June | $ | 161,300 | $ | 93,880 |
| Required: |
| Assume that the company uses the weighted-average method. |
| 1. | Determine the equivalent units for June for the Blending Department. |
| 2. |
Compute the costs per equivalent unit for the Blending Department. (Round your answers to 2 decimal places.) |
| 3. |
Determine the total cost of ending work in process inventory and the total cost of units transferred to the Bottling Department. (Do not round your intermediate calculations.) |
| 4. |
Prepare a cost reconciliation report for the Blending Department for June. (Do not round your intermediate calculations.) |
In: Accounting