Smartphones Many people have trouble setting up allthe features of their smartphones, so a company hasdeveloped what it hopes will be easier instructions. Thegoal is to have at least 96% of customers succeed. Thecompany tests the new system on 200 people, of whom188 were successful. Is this strong evidence that the newsystem fails to meet the company’s goal? A student’stest of this hypothesis is shown. How many mistakes canyou find?H0: pn = 0.96HA: pn ≠ 0.96SRS, 0.9612002 7 10188200 = 0.94; SD1pn2 = B 10.94210.062200 = 0.017 z = 0.96 - 0.940.017 = 1.18P = P1z 7 1.182 = 0.12

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.