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When analyzing the last digits of telephone numbers in Sandtown, it was found that among 1500 randomly selected phone numbers, 225 had zero as the
When analyzing the last digits of telephone numbers in Sandtown, it was found that among 1500 randomly selected phone numbers, 225 had zero as the last digit. If the digits are selected randomly, the proportion of zeroes should be 0.1 because from probability, 0 is one of the 10 possible digits. 1. Use the p-value method with a 0.01 level of significance to test the claim that the proportion of zeroes is not equal to 0.1. Use the sample data to construct a 99% confidence interval to estimate the proportion of zeroes. What does the confidence interval suggest about the claim that the proportion of zeroes is 0.1? . Compare the results from the hypothesis test and confidence interval. Do they lead to the same conclusion? Why or why not
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