Claim: three-fourths of all adults believe that it is important to be involved in their communities. Based on a USA Today/Gallup poll of 1021 randomly selected adults, 89% believe that it is important to be involved in their communities. Find the value of the test statistic.
Answer to relevant QuestionsAmong those who file tax returns, less than one-half file them through an accountant or other tax professional. A Fellowes survey of 1002 people who file tax returns showed that 48% of them file through an accountant or ...With H1: p ≠ 0.25, the test statistic is z = -1.23. Assume that the significance level is a = 0.05; use the given statement and find the P-value and critical values. The proportion of people who write with their left hand is equal to 0.1. Identify expressions that identify the type I error and the type II error that correspond to the given claim. Using the sample data from Exercise we can test the claim that p < 0.5, where p denotes the proportion of “yes” responses for the population. Some technologies provide results that include a P-value of 5.50E—9. Write ...In a 3M Privacy Filters poll, 806 adults were asked to identify their favorite seat when they fly, and 492 of them chose a window seat. Use a 0.01 significance level to test the claim that the majority of adults prefer ...
Post your question