O Reject Ho O Fail to reject Ho Feedback? Challenge activities CHALLENGE ACTIVITY 7.1.1: Two-tailed hypothesis testing for a population proportion (one sample). 359672 2299034.qx3zqy7 Jump to level 1 An online retailer would like to know whether the proportion of customers who visit the site and make a purchase is different than 50%. A simple random sample of customers is taken. The results of the sample are shown below. Customer sample What is the population parameter? made a purchase 45 Observations 120 The number of customers in the sample who made a purchase on the site Confidence Level 99% Critical value 2.58 What condition for using a z-distribution is met? test statistic (z) -2.74 p-value 0.006 Pick What is the level of significance? Ex: 0.12 What is the null hypothesis Ho? p = 0.50 What is the alternative hypothesis Ha ? p #0.50 Should Ho be rejected or does Ho fail to be rejected? Reject Ho v What conclusion can be drawn from the data? Insufficient | evidence exists to support the claim that the number of customers who visit the site and make a purchase is not 50%. Check Try again Feedback? CHALLENGE ACTIVITY 7.1.2: One-tailed hypothesis testing for a population proportion (one sample). 359672 2299034.qx3zqy7 v Jump to level 1