Feedback? CHALLENGE ACTIVITY 7.1.3: Hypothesis test for a population proportion. 376960.2353960.qx3zay7 Jump to level 1 w { N O - K A software company is interested in improving customer satisfaction rate from the 63% currently claimed. The company sponsored a survey of 276 customers and found that 188 customers were satisfied. What is the test statistic z? EX: 1.23 1 2 3 Check Next Feedback? 21 MacBook Air 30 888 F10 @ SD % 8 3 6 O W E R T U O P S D F G H K L X C V B N