deprivation by the Centers for Disease Control and Prevention, the proportion of California residents who reported insufficient rest or sleep during each of the preceding 30 days is 8.0%, while this percent is 8.8% for Oregon residents. These data are based on simple random samples of 11,545 California and 4,691
According to a report on sleep deprivation by the Centers for Disease Control and Prevention, the proportion of California residents who reported insufficient rest or sleep during each of the preceding 30 days is 8.0%, while this percent is 8.8% for Oregon residents. These data are based on simple random samples of 11,545 California and 4,691 Oregon residents.
Suppose we want to calculate a 99% confidence interval for the difference between the proportions of Californians and Oregonians who are sleep
deprived.
1. State the critical value for the interval (3 decimal places):
2. State the difference between the sample proportions, POregon-PCalifornia (3 decimal places):
3. State the standard error of the difference between the proportions (3 decimal places):
4. State the confidence interval being sure to use proper notation (3 decimal places each):
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