For each of the situations in parts a) through d), dene 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 days. Ho: p = 0.5 vs. HA: p $0.5. a) A casino wants to know if their slot machine really delivers the 7 in 100 win rate that it claims Let V =the V ofwins in the casino's slot machine. H0: V V0.07vs.HA: V V0.07 b) Last year, customers spent an average of $24.16 per visit to the company's website. Based on a random sample of purchases this year, the company wants to know if the mean this year has decreased. Let V = the V of customer spending per visit to the website. H0: 7 V24_16vs.HA: v V2416 c) A pharmaceutical company wonders if their new drug has a cure rate greater than the 40% reported by the placebo. Let V =the V of patients cured by the new drug. Ho: V V 0.40 vs. HA: V V 0.40 d) A bank wants to know if the percentage of customers using their website has increased from the 30% that used it before their system crashed last week. Let V = the V of customers using the bank website. H0: V V0.30vs.HA: V V0.30