Your friend Ande plays a lot of Overwatch, and mainly plays as one of two types...

Your friend Ande plays a lot of Overwatch, and mainly plays as one of two types of characters: Tank characters and Support characters. Suppose he grabs a random sample of 100 games where he played as a Tank character, which he won 63 of. He also takes a random sample of 150 games where he played as a Support character, which he won 75 of.

a) What is the estimate of the difference in proportion of games Ande wins? Find the estimate of pT ank − pSupport. b) Is it appropriate to assume that the sampling distribution of the difference in proportions is normally distributed?

c) Find a 95% confidence interval for the difference in part (a) and interpret it.

d) Suppose Ande wants to test to see if he wins a higher proportion of games as a Tank character at a significance level of .05. What are the hypotheses for this test?

e) Calculate the z-test statistic for the tests defined in part (d).

f) Find the P-value for the test defined in part (d)

g) State your conclusion for the hypothesis test, and then interpret the result in the context of the problem.

Expert Solution

orchestra answered 2 years ago

A contractor builds two types of homes. The Carolina requires one lot, $160,000 capital, and 160...

A contractor builds two types of homes. The Carolina requires one lot, $160,000 capital, and 160 worker-days of labor, whereas the Savannah requires one lot, $240,000 capital, and 160 worker-days of labor. The contractor owns 300 lots and has $48,000,000 available capital and 43,200 worker-days of labor. The profit on the Carolina is $60,000 and the profit on the Savannah is $70,000. 1)Find how many of each type of home should be built to maximize profit. aCarolina homes bSavannah homes...

Your friend is talking to you about one of their investments. Yesterday, your friend received a...

Your friend is talking to you about one of their investments. Yesterday, your friend received a cheque from the investment for $6,000. According to the company’s annual report and forecast, the company expects the amount of the cash flow to increase or grow at 15 percent for the next 5 years and then to grow at 2 percent forever. 1. If you require a 15% return on your investment, what is the value of this investment today? 2. If interest...

The probability of winning on a lot machine is 5%. If a person plays the machine...

The probability of winning on a lot machine is 5%. If a person plays the machine 500 times, find the probability of winning 30 times. Use the normal approximation to the binomial distribution. A travel survey of 1500 Americans reported an average of 7.5 nights stayed when they went on vacation. Find a point estimate of the population mean. If we can assume the population standard deviation is 0.8 night, find the 95% confidence interval for the true mean. SHOW...

You anda friend have built a cart. Your friends pushed you on a level parking lot...

You anda friend have built a cart. Your friends pushed you on a level parking lot with constant force for five seconds. Final speed 15 m/s. You then coast 80 meters to a stop. Determine the accelerations of both parts of the trip. Also, the total travel time and total distance travelled

Soundex Inc. produces two types of audio cassettes: standard and high quality. Standard cassettes are mainly...

Soundex Inc. produces two types of audio cassettes: standard and high quality. Standard cassettes are mainly used in answering machines and are designed to last longer than for precise sound reproduction. The company only recently started producing the premium, high-end model to enter the lucrative music recording market. Since the new product was introduced, profits have steadily declined. Management believes that the accounting system may not be able to accurately allocate costs to products, especially as sales of the new...

Two groups are having competition for chase. If one plays it in its own campus it...

Two groups are having competition for chase. If one plays it in its own campus it will win with probability P> ½. They will play three times, two in group 1’s campus and one in group 2’s campus. If one wins game 1 and 2, then game 3 is not going to be played. a) What is P[T], the probability that the group 1 wins the series? b) If they play only once will group 1 have higher chance of...

The mother of your close friend is also told to exercise. Why? Although many types of...

The mother of your close friend is also told to exercise. Why? Although many types of exercise are appropriate, why is swimming generally not recommended?

Identify a problem behavior of your own, or of a good friend, then select one or...

Identify a problem behavior of your own, or of a good friend, then select one or more behavior therapy techniques which might be applied to improve (or remove) this behavior. Be specific in showing how they would be used.

1. Two groups are having competition for chase. If one plays it in its own campus...

1. Two groups are having competition for chase. If one plays it in its own campus it will win with probability P> ½. They will play three times, two in group 1’s campus and one in group 2’s campus. If one wins game 1 and 2, then game 3 is not going to be played. a) What is P[T], the probability that the group 1 wins the series? b) If they play only once will group 1 have higher chance...

Economics plays a role in personal finance. Describe the role that economics plays in your personal...

Economics plays a role in personal finance. Describe the role that economics plays in your personal financial plan. Also, the use of credit plays a role in a personal financial plan. Describe the advantages and disadvantages of credit and explain how you will use it as part of your financial plan. Specifically address the following required elements: Explain the role the government plays in personal finance (focus on regulations, laws, economic policy, governmental assistance, etc.). Explain the impact of the...

Question