Question

Please answer question number 4

for your e 3. Parameters and hypotheses For each of the following situa- tions, define the parameter (proportion or mean) and write the null and alternative hypotheses in terms of parameter values. Example: We want to know if the proportion of up days in the stock market is 50%. Answer: Let p the proportion of up 05. days. h = 0.5 vs. HA: /, a) A casino wants to know if their slot machine really delivers the 1 in 100 win rate that it claims b) Last year, customers spent an average of $35.32 per visit to the company's website. Based on a random sample of pur- chases this year, the company wants to know if the mean this year has changed c) A pharmaceutical company wonders if their new drug has a cure rate different from the 30% reported by the placebo. d) A bank wants to know if the percentage of customers using their website has changed from] the 40% that used it before their system crashed last week. 4. Hypotheses and parameters As in Exercise 3, for each of the following situations, define the parameter and write the null and alternative hypotheses in terms of parameter values

Answer 1