You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly different from 68% at a level of significance of αα = 0.01. According to your sample, 43 out of 56 potential voters prefer the Democratic candidate.

1. For this study, we should use Select an answer(t-test for a population mean, z-test for a population proportion)
2. The null and alternative hypotheses would be:
   Ho:( p, μ) (?, =, ≠, >, <) (please enter a decimal)   
   H₁: ( p, μ) (?, >, ≠, <, =) (please enter a decimal)

3. The test statistic ( z, t) =_____ (please show your answer to 3 decimal places.)
4. The p-value =__________ (Please show your answer to 4 decimal places.)
5. The p-value is (?, >,≤) α
6. Based on this, we should Select an answer (reject, fail to reject, accept) the null hypothesis.
7. Thus, the final conclusion is that ...

*The data suggest the population proportion is not significantly different from 68% at αα = 0.01, so there is not sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is different from 68%.

*The data suggest the populaton proportion is significantly different from 68% at αα = 0.01, so there is sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is different from 68%.

*The data suggest the population proportion is not significantly different from 68% at αα = 0.01, so there is sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is equal to 68%.

h.Interpret the p-value in the context of the study.

• *If the population proportion of voters who prefer the Democratic candidate is 68% and if another 56 voters are surveyed then there would be a 15.88% chance that either more than 76% of the 56 voters surveyed prefer the Democratic candidate or fewer than 60% of the 56 voters surveyed prefer the Democratic candidate.
• *There is a 15.88% chance of a Type I error.
• *If the sample proportion of voters who prefer the Democratic candidate is 76% and if another 56 voters are surveyed then there would be a 15.88% chance that we would conclude either fewer than 68% of all voters prefer the Democratic candidate or more than 68% of all voters prefer the Democratic candidate.
• *There is a 15.88% chance that the percent of all voters who prefer the Democratic candidate differs from 68%.

i. Interpret the level of significance in the context of the study.

• *If the population proportion of voters who prefer the Democratic candidate is 68% and if another 56 voters are surveyed then there would be a 1% chance that we would end up falsely concluding that the proportion of voters who prefer the Democratic candidate is different from 68%
• *If the proportion of voters who prefer the Democratic candidate is different from 68% and if another 56 voters are surveyed then there would be a 1% chance that we would end up falsely concluding that the proportion of voters who prefer the Democratic candidate is equal to 68%.
• *There is a 1% chance that the earth is flat and we never actually sent a man to the moon.
• *There is a 1% chance that the proportion of voters who prefer the Democratic candidate is different from 68%.

Who is Tim Horton's current leader? Provide a description of him/her. What contributions he/she has made to the company?

1.CAPACITY PLANNING
1.1 In what case should capacity plan be revised?

2.SUPPLIER MANAGEMENT
2.1 How can suppliers (who wants highest price) and buyer firm (who wants lowest cost) be partners?

3.LEARNING CURVE
There are 2 firms: Company A and Company B.

3.1 Company A took 150 hours to produce its first unit.
This month it wants to product 500 units.

Using 80% learning curve, how many hours will it
take to produce those 500 units?

3.2 Comany B also produced 500 units.

However, it took B only 50 hours to produce its first unit.
What was was B's learning curve?

Star Industries Ltd would like to hedge its US$10 million payable to a US chip manufacturer, which is due in 90 days. Star approached various banks and obtained the following foreign exchange rate quotes as well as interest rates.

(a) If Star were to hedge forward its US$10m payable, analyse and compute the amount in Singapore dollars that the firm needs today.

(b) Jack Tan, a recent finance graduate working in Star, suggested an alternative. Instead of doing a forward transaction, he suggested that the firm converts Singapore dollars into US dollars today and deposit the US dollars in a US dollar deposit account. Analyse and compute the amount of Singapore dollars that the firm needs today if it follows Jack’s suggestion.

(c) Assess which alternative is better for the firm.

(d) Examine and discuss whether there are any opportunities for arbitrage profits and their feasibility.

(1 point) Fueleconomy.gov, the official US government source for fuel economy information, allows users to share gas mileage information on their vehicles. The histogram below shows the distribution of gas mileage in miles per gallon (MPG) from 14 users who drive a 2012 Toyota Prius. The sample mean is 53.3 MPG and the standard deviation is 5.2 MPG. Note that these data are user estimates and since the source data cannot be verified, the accuracy of these estimates are not guaranteed. Report all answers to 4 decimal places.

1. We would like to use these data to evaluate the average gas mileage of all 2012 Prius drivers. Do you think this is reasonable? Why or why not?

? Yes No , because  ? the data distribution seems approximately normal there are 14 data points in the sample user estimates are reliable user estimates are not reliable .

The EPA claims that a 2012 Prius gets 50 MPG (city and highway mileage combined). Do these data provide strong evidence against this estimate for drivers who participate on fueleconomy.gov? Conduct a hypothesis test. Round numeric answers to 3 decimal places where necessary.

2. What are the correct hypotheses for conducting a hypothesis test to determine if these data provide strong evidence against this estimate for drivers who participate on fueleconomy.gov? (Reminder: check conditions)

A. ?0:?=50H0:μ=50 vs. ??:?≠50HA:μ≠50
B. ?0:?=50H0:μ=50 vs. ??:?>50.3HA:μ>50.3
C. ?0:?=53.3H0:μ=53.3 vs. ??:?≠53.3HA:μ≠53.3
D. ?0:?=50.3H0:μ=50.3 vs. ??:?<50HA:μ<50

3. Calculate the test statistic.

4. Calculate the p-value.

5. How much evidence do we have that the null model is not compatible with our observed results?

A. some evidence
B. little evidence
C. extremely strong evidence
D. strong evidence
E. very strong evidence

6. Calculate a 95% confidence interval for the average gas mileage of a 2012 Prius by drivers who participate on fueleconomy.gov.

( ,  )

Imagine that you are a physician and you have just received the results back for a patient of yours who has just tested positive for the “heartbreak of psoriasis”. The test used will correctly label a person who is suffering from the “heartbreak of psoriasis” as a sufferer 90% of the time and will correctly label a person who is not suffering from the “heartbreak of psoriasis” as not being a sufferer 60% of the time. If the base-rate of suffering from the “heartbreak of psoriasis” is 5%, explain to your patient how likely she is actually suffering from the “heartbreak of psoriasis” on the basis of this positive result.

I got 7.32% using Bayes Theorem. Is this right?

what are the advantages and disadvantages of Debt for corporation and for individual?