STA 205 Study Guide - Final Guide: Statistical Hypothesis Testing, Test Statistic, Sampling Distribution
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Lab questions hypothesis test for the proportion. Sta 205, fall 2018: according to the pew research group, 16% of online adults used twitter in 2015. The social networking site would like to determine if this percentage increased significantly in 2016. A random sample of 1,445 online adults is planned in order to test the claim: determine if the required assumptions are satisfied in order to conduct a hypothesis test for the claim which was made. Refer to the example we did in the notes i expect there to be context: when the sample of 1,445 online adults is selected, it is found that 255 of those sampled used twitter in 2016. Use this information to test the appropriate hypothesis at the 0. 10 level. If the inference conducted in part c had been two-sided, what would the new probability have been: the bureau of transportation statistics reports that 80% of flights for a particular airline arrive on time.
