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It was determined that the percentage of a's in the English language in the 1800s was 11%. A random sample of 1000 letters from a current newspaper contained 121 a's. Test the hypothesis that the proportion of a's has changed in modern times, using the 0.05 level of significance. Treat the newspaper as a random sample of all letters used. State the null and alternative hypotheses. O A. Ho: P #0.11 Ha: p= 0.11 O B. Ho: p> 0.11 Ha: p 0.11 O D. Ho: P= 0.11 Ha: p > 0.11 O E. Ho: P= 0.11 Ha: p #0.11 Determine the z-test statistic. z= (Round to two decimal places as needed.) Find the p-value. p-value = (Round to three decimal places as needed.) Choose the correct conclusion. O A. Reject Ho. The proportion of a's is not significantly different from 0.11. O B. Do not reject Ho. The proportion of a's is significantly different from 0.11. O C. Reject Ho. The proportion of a's is significantly different from 0.11. O D. Do not reject Ho. The proportion of a's is not significantly different from 0.11