Mathematics, 25.02.2021 18:00 crtlq
About 78% of the US, population claims that they visit the dentist at least once a year. simple random sample of 200 people is selected for a health study and the sample proportion of those who visited the dentist at least once during the year is computed. Which one of the following gives, respectively, the mean and standard deviation of the sampling distribution oft 27. the sample proportion who claim they visit the dentist at least once a year?
A)156, 12.49
B) 156, 5.86
C) 0.78, 0.012
D) 0.78, 0.029
E) You cannot determine the standard deviation from the given information.
Answers: 2
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