Question
. At a local football game, a field goal attempt was made. From the sidelines, it looked like the football did not pass through the
. At a local football game, a field goal attempt was made. From the sidelines, it looked like the football did not pass through the goal posts. From the kicker's perspective, it looked like the field goal was successful. The referee is about to make a call...
First, state your null hypothesis for this scenario regarding if the kick was good or not.
Second, use this scenario to explain Type I and Type II errors.
2. Explain what a p-value is, and explain how it is used to test a hypothesis. Make sure to include alpha in your answer and explain what to do if p values are greater/less than alpha).
3. Fully explain the steps in hypothesis testing using the p-value method. (Explaining is more than listing) If you did this well in your discussion, then you may use that here too. Remember, explanations go beyond a list of steps. Make sure to show formulas, tell me HOW to do the steps.Please avoid generic statements like "calculate the test statistic." Instead, tell me what my test statistics are, show me formulas...etc.This answer should take quite a bit of space.
4. How do we decide whether to use a z test or a t test in hypothesis testing? (The discussion had this part too)
5. Work through this hypothesis test using the prompts below. In other words, finish the sentences I have started.
A sample of 115 account balances of credit company showed a mean of customer balance of $5,000, but the marketing manager claimed that the mean balance for the population was $5,158. The marketing manager did NOT have the population standard deviation, but the sample standard deviation was found to be $220. Use the p-value approach to conduct a full hypothesis test (all steps) that can be used to determine whether the mean of all account balances is significantly different from $5,158. Let= .10.
To help you go through the steps of hypothesis testing, follow these prompts:
The null hypothesis is
The alternative hypothesis is
This test is (choose 1: one-tailed / two-tailed) because the last sentence contains the words (choose 1: greater than/ less than / different from).
I will use a (choose 1: t/z) in my formula because
I have calculated the value of t (or z) to be
(Insert your work for calculating t or z)
I have used t (or z) to get the value of p (most likely from a chart or computer printout - provide that printout). My p value is
Alpha, which is given in the problem, is
When I compared p to alpha, p is (choose 1: greater than/less than) alpha.
Because of this, I know I should (choose 1: reject / fail to reject) my null hypothesis.
Choose one: In summary, the mean balance is different than $5158 / In summary, the mean balance is NOT different than $5158.
6. Work through this hypothesis test using each step of hypothesis testing. You may want to borrow the prompts from the previous problem.
A sample of 12 homes for sale in ABC City showed a mean asking price of $350,000, but the city claimed that the mean asking price for the population was $365,100. The population standard deviation of all homes for sale was $7,300. Use the p-value approach to conduct a full hypothesis (all steps - follow the guidance in the last problem) that can be used to determine whether the mean asking price is significantly greater than $365,100 Let=. 0.01
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