As a result of the COVID-19 crisis there was a global move to home working, and increased reliance on video conference facilities such as those offered by Zoom Video Communications. At the same time there was a sudden increase in trading volumes for Zoom Technology shares. The latter is a company that sells electronic technology for mobile phones. It was soon established that this was a clear case of mistaken identity. Please propose and explain a test for establishing whether the markets are efficient in this case.
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- A serious side effect of allergy medicines is that they cause drowsiness, which can cause many problems for the individuals taking them. In recent years, a new non-drowsy allergy medicine has been developed. The company that created the medicine claims to be the first, once-a-day, non-drowsy allergy medicine (call it Medicine A). An independent research group wanted to check on this claim by comparing medicine A with another allergy medicine not advertised as non-drowsy (call it Medicine B). A random sample of 3,193 allergy sufferers was selected and each individual was randomly assigned to take either Medicine A or Medicine B. From the Medicine A group, 114 of 1,604 reported drowsiness and from the Medicine B group, 155 of 1,589 reported drowsiness. Calculate and label the two sample proportions separately. Next, calculate the difference between these sample proportions by subtracting (Medicine A – Medicine B). Complete these calculations by hand, label each of them, and…CBS poll of March 2005 referred to in Exercise 65, 49% agreed that Social Security taxes should be raised if necessary to keep the system afloat, and 43% agreed that it would be a good idea to invest part of their Social Security taxes on their own. What is the largest percentage of people who could have agreed with at least one of these statements? What is the smallest percentage of people who could have agreed with at least one of these statements?What is a dummy variable trap and how is it related to multicollinearity of regressors? What is the solution for this form of multicollinearity?
- Although investing all at once works best when stock prices are rising, dollar-cost averaging can be a good way to take advantage of a fluctuating market. Dollar-cost averaging is an investment strategy designed to reduce volatility in which securities are purchased in fixed dollar amounts at regular intervals regardless of what direction the market is moving. This strategy is also called the constant dollar plan. You are considering a hypothetical $1,200 investment in a media company's stock. Your choice is to invest the money all at once or dollar-cost average at the rate of $100 per month for one year. Assume that the company allows you to purchase "fractional" shares of its stock. (a) If you invested all of the money in January and bought the shares for $12 each, how many shares could you buy? shares (b) From the following chart of share prices, calculate the number of shares that would be purchased each month using dollar-cost averaging and the total shares for the year.…1. Redback Industries is a relatively small but successful and fast-growing maker of peripheral devices for cell phones including battery chargers, enhanced antennas, SIM cards, and custom carrying cases. Costco is considering purchasing Redback in order to sell the devices as private label offerings. However, Costco has set an offer price of $ 600M that depends on whether Redback’s current Annual Net Income is higher and significantly different from its 14-year average of $ 104.5M per year; Redback has indicated it is willing to sell itself to Costco at the $600M price. Use the following information to determine at the 95 % Level Of Confidence whether Costco will proceed with the purchase at the planned price of $ 600M or will lower its offering price if Redback’s current Annual Net Income is not greater than $ 104.5M per year. Redback Industries Normalized Yearly Annual Net Income over the last 14 years is $ 104.5M Redback Industries is currently reporting Yearly Annual Net…The new business venture, Best-In-World, has been manufacturing technology devices for over 20 years and is considering adding a new technology device to its music line. They have an established reputation for building quality devices, but they are rather novice in the music industry. The Chief Innovation and Design Officer, Julie Naugle-Hall, is tasked with hiring a marketing firm to conduct a survey to determine the feasibility and demand for their new music device. The follow decision table illustrates the potential payoffs for a high demand, moderate demand and low demand for the new music device. The decision will be whether to start production on this new device in small scale, large scale or not at all. Alternatives Answer Small-scale production Large-scale production No production Probabilities Step 2 of 3: What is the Expected Value with Perfect Information? $ Decision Table High Demand 850,000 1,700,000 0 0.20 State of Nature Moderate Demand 300,000 700,000 0 0.50 Low Demand…
- The new business venture, Best-In-World, has been manufacturing technology devices for over 20 years and is considering adding a new technology device to its music line. They have an established reputation for building quality devices, but they are rather novice in the music industry. The Chief Innovation and Design Officer, Julie Naugle-Hall, is tasked with hiring a marketing firm to conduct a survey to determine the feasibility and demand for their new music device. The follow decision table illustrates the potential payoffs for a high demand, moderate demand and low demand for the new music device. The decision will be whether to start production on this new device in small scale, large scale or not at all. Alternatives Answer Small-scale production Large-scale production No production Probabilities Decision Table High Demand 850,000 1,700,000 0 0.20 State of Nature Moderate Demand 300,000 700,000 0 0.50 Low Demand -700,000 -1,000,000 0 0.30 Step 3 of 3: How much should Julie be…Movieflix, an online movie streaming service that offers a wide variety of award-winning TV shows, movies, animes, and documentaries, would like to determine the mathematical trend ofmemberships in order to project future needs. What is the nature of the relationship between advertising expenditure and membership? Forecast 2024 membership using an alternative method, clearly explaining the limitations of your selected method. What are the limitations of the method used in (iii)?Digital self-service or Self Service Technology (SST) cannot be neglected in the modern world. Hotels are also adopting self-service technology where check-in and check-out kiosks makes guests' arrivals more pleasant and less turbulent. Knowing this, Anna has decided to choose the "self-service technology in hotels" as title for her Master's project paper. Anna wants to find out how satisfied hotel guests are with the self-service technology. Anna talked to a few hotel managers about this title. Managers told her to include variables like satisfaction with SST (i.e. check-in and check-out kiosks), overall satisfaction with the hotel and revisit intention. Since literature review is too time consuming, she decided to go ahead with data collection without reading any articles. She then created a few questions on her own and complete questionnaire development within two days. She then went to five hotels in Kuala Lumpur, and managed to collect 200 completed questionnaires from hotel…
- 5You are a hotel manager and you are considering four projects that yield different payoffs, depending upon whether there is an economic boom or a recession. The potential payoffs and corresponding payoffs are summarized in the accompanying table. \table[[Project, Boom (50% ), Recession (50%)], [A, $20, -$10 You are a hotel manager and you are considering four projects that yield different payoffs, depending upon whether there is an economic boom or a recession. The potential payoffs and corresponding payoffs are summarized in the accompanying table. Project A Boom (50%) $ 20 -$10 Recession (50%) -$ 10 $ 20 B C $30 -$30 D $ 50 -$ 50 If a manager adopted both projects A and B simultaneously, the expected value of this joint project would be Multiple Choice 10.A gerontologist investigating various aspects of aging process wanted to see whether staying “ lean and mean, “ that is, being under normal body inbred line to one of three diets: (1) unlimited access to food, (2) 90% of the amount of food that a rat of size would normally eat, or (3) 80% of amount of food that a rat of the size would normally eat. She maintained the rats on three diets throughout their lives and recorded their lifespans (in years). Five rates in each group. Is there evidence that diet affected life span in this study? Let α= 0.01 Complete the ANOVA table . Source of variation df SS MS Fc Treatment 2 1.575 Error 12 Total 14 5.60 A) Hypothesis Test H0: H1: B) Test Statistic C) Decision Rule d) Conclusion *(please with equations and explanation) and thamnk you