19) Find the critical value Za/2 that corresponds to a 91% confidence level. (Round to 2...
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19) Find the critical value Za/2 that corresponds to a 91% confidence level. (Round to 2 decimals) 20) Find Za/2 for a = 0.08. (Round to 2 decimals) 21) Find the sample needed to estimate the percentage of Republicans among registered voters in California. Use a 0.03 margin error, use the confidence level of 90%, and assume that p-hat and q-hat are unknown. 22) Find the sample needed to estimate the percentage of Democrats who have tattoos. Use a 0.05 margin error, use the confidence level of 99%, and use results from a prior Harris poll suggesting that 15% of Democrats have tattoos. 23) Find the sample needed to estimate the percentage of adults who have consulted fortune tellers. Use a 0.03 margin error, use the confidence level of 98%, and use results from a prior Pew Research Center poll suggesting that 15% of adults have consulted fortune tellers. SPRING 2020 19) Find the critical value Za/2 that corresponds to a 91% confidence level. (Round to 2 decimals) 20) Find Za/2 for a = 0.08. (Round to 2 decimals) 21) Find the sample needed to estimate the percentage of Republicans among registered voters in California. Use a 0.03 margin error, use the confidence level of 90%, and assume that p-hat and q-hat are unknown. 22) Find the sample needed to estimate the percentage of Democrats who have tattoos. Use a 0.05 margin error, use the confidence level of 99%, and use results from a prior Harris poll suggesting that 15% of Democrats have tattoos. 23) Find the sample needed to estimate the percentage of adults who have consulted fortune tellers. Use a 0.03 margin error, use the confidence level of 98%, and use results from a prior Pew Research Center poll suggesting that 15% of adults have consulted fortune tellers. SPRING 2020
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19 given data confidence level is 91 Critical Value The ... View the full answer
Related Book For
Elementary Statistics Picturing the World
ISBN: 978-0321911216
6th edition
Authors: Ron Larson, Betsy Farber
Posted Date:
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