the american association of individual investors conducts a weekly survey of its members to measure the percent who are bullish, bearish, and neutral on the stock market for thenext six months. for the week ending november 7, 2012, the survey results showed 38.5%bullish, 21.6% neutral, and 39.9% bearish (aaii website, november 12, 2012). assumethese results are based on a sample of 300 aaii members.a. over the long term, the proportion of bullish aaii members is .39. conduct a hypothesis test at the 5% level of significance to see if the current sample results show thatbullish sentiment differs from its long term average of .39. what are your findings?b. over the long term, the proportion of bearish aaii members is .30. conduct a hypothesis test at the 1% level of significance to see if the current sample results show thatbearish sentiment is above its long term average of .30. what are your findings?c. would you feel comfortable extending these results to all investors? why or why not?
the american association of individual investors conducts a weekly survey of its members to measure the percent who are bullish, bearish, and neutral on the stock market for the
next six months. for the week ending november 7, 2012, the survey results showed 38.5%
bullish, 21.6% neutral, and 39.9% bearish (aaii website, november 12, 2012). assume
these results are based on a sample of 300 aaii members.
a. over the long term, the proportion of bullish aaii members is .39. conduct a hypothesis test at the 5% level of significance to see if the current sample results show that
bullish sentiment differs from its long term average of .39. what are your findings?
b. over the long term, the proportion of bearish aaii members is .30. conduct a hypothesis test at the 1% level of significance to see if the current sample results show that
bearish sentiment is above its long term average of .30. what are your findings?
c. would you feel comfortable extending these results to all investors? why or why not?
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