Mathematics, 07.03.2020 03:45 Sillydork6872
The number of cars that roll through a stop sign at a particular intersection has had an historical average of 1.75 cars rolling through per hour. On a particular week, a random sample of 20 hours had a mean number of cars rolling through equal to 1.8 with a standard deviation equal to 1.04. At the 5 percent level of significance, does this sample show that the average number of cars rolling through the stop sign is higher than the historical average? Steps: 1. Open Minitab on your computer. 2. There is no data file for this example. The information above contains summarized data (take info from story and plug into Minitab) (a) Choose the correct null and alternative hypotheses. a. H0: μ ≥ 1.75 vs. H1: μ < 1.75 b. H0: μ ≤ 1.75 vs. H1: μ > 1.75 c. H0: μ = 1.75 vs. H1: μ ≠ 1.75
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