Amarketing research consultant hired by coca-cola is interested in determining if the proportion of customers who prefer coke to other brands is over 50%.
a random sample of 200 consumers was selected from the market under investigation, 55% favored coca-cola over other brands. additional information is presented below. sample proportion0.55standard error of sample proportion0.03518z test statistic1.4213p-value0.07761 1- if you were to conduct a hypothesis test to determine if greater than 50% of customers prefer coca-cola to other brands, would you conduct a one-tail or a two-tail hypothesis test? explain your answer.2- how many customers out of the 200 sampled must have favored coke in this case? 3- using a 5% significance level, can the marketing consultant conclude that the proportion of customers who prefer coca-cola exceeds 50%? explain your answer.4- if you were to use a 1% significance level, would the conclusion from part c change? explain your answer.