What item does the grandmother remember that causes the detour?

Introduction to Statistics – Test 4 Show working     What are the possible forms of the alternative hypothesis in a hypothesis test?             In hypothesis testing, what is:  a) A type 1 error ?                                                                  b) A type 2 error ?         a) What does a p-value represent in a hypothesis test ?               b) Is the null hypothesis ever proven to be true in a hypothesis test? Explain.             It is thought that the mean length of trout in lakes in a certain region is 20 inches. A sample of 46 trout from one particular lake had a sample mean of 17.5 inches and a sample standard deviation of 4 inches. Conduct a hypothesis test at the 0.05 significance level to see if the average trout length in this lake is less than mu=20 inches. Use a p-value approach.                     Athletes at UC Boulder have a long term graduation rate of 69%. Recently, a sample of 34 athletes showed 20 graduates. Does this indicate that the population proportion of athletes who graduate is now less than 69%. Use a significance level of alpha=0.05. Use a critical region approach.                     Explain how your answer to question 4 would change if the population standard       deviation of trout length was 4 inches instead of the sample standard deviation       being 4 inches.                   If a confidence interval for the difference in two proportions contains some negative values and some positive values, what conclusion can you draw about the two proportions? Explain.               In a clinical trail, 227 people were given OxyContin and 52 developed nausea. In that trial 45 people were given a placebo and 5 developed nausea. Use a 0.05 level significance for testing a difference in proportions of those who developed nausea when taking OxyContin versus a placebo. Hint….use a two-sided hypothesis test.             Repeat question 8, only this time answer the question by constructing an appropriate confidence interval for the difference in proportions.                     36 cans of regular coke had an average volume (xbar ) of 12.19oz and a sample standard deviation ( s ) of 0.11oz . 36 cans of pepsi had an average volume of 12.29oz and a sample standard deviation of 0.09oz . Use a 0.05 significance level to test the claim that cans of regular coke and regular pepsi have the same mean volume.                     Repeat question 10 by constructing an appropriate confidence interval for the difference in means.                 Considering the following data:   Subject      A        B       C       D       E                                                               Before       6.6     6.5     9.0   10.3   11.3                                                               After          6.8     2.4     7.4   8.5     8.1     Use a dependent samples hypothesis test to test whether there is a significant     difference between the Before and After levels. Helpful hint….the standard   deviation of the differences in the 5 pairs of measurements is 1.646 ( I saved you   needing to make that calculation ). Use a 0.01 level of significance ( alpha ).                            Construct a 95% confidence interval for the mean of the “Before/After” differences.                  

Who was NOT present at the Battle of the Alamo?

Which battle ended the Texas Revolution?

Who was the Secretary of State that helped negotiate the treaty which gave the United States claim to Florida?

Who became president after Andrew Jackson’s 2nd term?

Which political party emerged to challenge the Democratic-Republican Party during the era of Andrew Jackson’s presidency?

Thomas Jefferson was the person most responsible for the ideas of the –

Why was Andrew Jackson perceived as a “man of the common people” type of president?

Which American figure was NOT considered a part of the Nationalist movement that occurred right after the War of 1812?