Suppose that a poll taken 10 years ago found that 57% of parents spank their children. Suppose a recent poll of 300 adults with children finds that 146 indicated that they spank their children....

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Extracted text: Suppose that a poll taken 10 years ago found that 57% of parents spank their children. Suppose a recent poll of 300 adults with children finds that 146 indicated that they spank their children. Complete parts (a) and (b) below. (a) Assuming parents' attitude toward spanking has not changed since the original poll, how many of the 300 parents surveyed would be expected to spank their children? The expected amount of parents surveyed that would spank their children is (Round to the nearest whole number as needed.) (b) Do the results of the survey suggest that parents' attitude toward spanking may have changed since the original poll? Why? O A. No, 146 is inside the "usual" observation interval of this survey. O B. No, 146 is within one standard deviation of the expected amount of adults that spank their children. Oc. Yes, 146 is outside the "usual" observation interval of this survey. OD. Yes, 146 is less than the expected amount adults that spank their children.