Suppose there exists external economies of scale in an industry located in country X. If country X moves from free trade to autarky, it necessarily loses welfare. Explain in detail, using any relevant diagrams, whether the above statement is true, false or uncertain.
In: Economics
Discuss a number of traditional and contemporary theories of communication. Choose one of these theories and explain in detail how this theory can guide a public relations campaign. Provide at least one example of how this theory has been used in a current public relations campaign.
In: Operations Management
CHCDIV001-Work with Diverse People
In: Nursing
A manager for an insurance company believes that customers have the following preferences for life insurance products: 40 % prefer Whole Life, 20 % prefer Universal Life, and 40 % prefer Life Annuities. The results of a survey of 212 212 customers were tabulated. Is it possible to refute the sales manager's claimed proportions of customers who prefer each product using the data?
| product | number |
| whole | 70 |
| universal | 50 |
| annuities | 92 |
state the null and alternative hypothesis
What does the null hypothesis indicate about the proportions of customers who prefer each insurance product?
State the null and alternative hypothesis in terms of the expected proportions for each category
Find the expected value for the number of customers who prefer Whole Life. Round your answer to two decimal places.
Find the expected value for the number of customers who prefer Life Annuities. Round your answer to two decimal places.
Find the value of the test statistic. Round your answer to three decimal places.
Find the degrees of freedom associated with the test statistic for this problem.
Find the critical value of the test at the 0.01 level of significance. Round your answer to three decimal places.
Make the decision to reject or fail to reject the null hypothesis at the 0.01 level of significance
State the conclusion of the hypothesis test at the 0.01 level of significance
In: Statistics and Probability
1) Define what is behavioral finance.
2) What's the difference between classical finance and behavioral finance
3) Explain what is anomaly in finance, and state two examples of annomaly
In: Finance
Many economists reply to these arguments that, at the end of the day, it does no “harm” for a country to run a trade deficit, certainly it does not matter with any particular country, and nor does it matter when looking at the U.S. and all of its trading partners as a whole. Explain in detail the logic of their argument. After explaining these two point-of-view which do you think in more correct? Why?
In: Economics
Lab name: Phenol Red Broth. (please be detailed with. your answer)
Early formulations of this medium used a smaller amount of carbohydrate and occasionally produced false alkaline (pink) results after 48 hours. Why do you think this happened? List at least 2 steps, as a microbiologist, you could take to prevent the problem.
Suppose you inoculate a PR broth with a slow-growing fermenter. After 48 hours, you see slight turbidity but score (-/-). Is this a false positive or a false negative. Is this failure a result of a lack of specificity or sensitivity of the test system?
In: Biology
4) Suppose you get pulled over for going through a red light. With your knowledge of physics and the Doppler Effect, you tell the cop that due to the Doppler Effect you didn't even see any light coming from the traffic light and you thought it was broken or not a light. The cop, however, has an equal knowledge of the Doppler Effect and decides to give you a ticket equal to $6 for every mph you were hypothetically traveling to not see the light. If red light is 5.8 x 1012 Hz and ultraviolet light is 7.2 x 1012 Hz, how much is the ticket in billions of dollars if 1 m/s = 2.24 mph?
In: Physics
Back to your Grandma's house for Christmas, with the bowl of holiday-themed red and green M&Ms (100 of each color).
What's the probability that the first 3 you eat will all be the same color?
Group of answer choices
(100/200 x 99/199 x 98/198) + (100/200 x 99/199 x 98/198)
1 - (100/200 x 99/199 x 98/198)
100/200 x 99/199 x 98/198
100/200 + 99/199 + 98/198
(100/200 x 100/200 x 100/200) + (100/200 x 100/200 x 100/200)
In: Statistics and Probability
You are driving your car, and the traffic light ahead turns red. You apply the brakes for 2.73 s, and the velocity of the car decreases to + 5.37 m/s. The car’s deceleration has a magnitude of 3.02 m/s2 during this time. What is the car’s displacement? x =
A dynamite blast at a quarry launches a rock straight upward, and 1.8 s later it is rising at a rate of 10 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b) 4.4 s after launch.
Concept Simulation 2.3 provides some background for this problem. A ball is thrown vertically upward, which is the positive direction. A little later it returns to its point of release. The ball is in the air for a total time of 8.36 s. What is its initial velocity? Neglect air resistance. v0 =
Concept Simulation 2.3 offers a useful review of the concepts central to this problem. An astronaut on a distant planet wants to determine its acceleration due to gravity. The astronaut throws a rock straight up with a velocity of +21.2 m/s and measures a time of 18.4 s before the rock returns to his hand. What is the acceleration (magnitude and direction) due to gravity on this planet? (positive = up, negative = down)
A hot-air balloon is rising upward with a constant speed of 3.78 m/s. When the balloon is 9.24 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground? From her bedroom window a girl drops a water-filled balloon to the ground, 8.93 m below. If the balloon is released from rest, how long is it in the air?
From her bedroom window a girl drops a water-filled balloon to the ground, 8.93 m below. If the balloon is released from rest, how long is it in the air?
In: Physics