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The following information is used in the questions on this page. According to a report on sleep deprivation by the Centers for Disease Control and Prevention the proportion of California residents who reported insufficient sleep during the on each of the preceding 30 days is 8.0% while this proportion is 8.8% for Oregon residents. A random sample of 11,545 California and 4,691 Oregon residents were surveyed. We are interested in finding out if there is evidence to suggest that the rate of sleep deprivation is different for the two states. What statistical method is appropriate for testing if the rate of sleep deprivation is different for the two states? Select one: O a. one sample t-test b. one proportion z-test c. two sample t-test d. two proportion z-test Clear my choice