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6. An SRS of 81 students is taken from the population of all full-time students in the United States, for which the overall proportion of

6. An SRS of 81 students is taken from the population of all full-time students in the United States, for which the overall proportion of females is 0.5.

a. Can this be normally approximated? Show work.

b. Find the mean and standard deviation.

c. What is the probability that sample proportion p-hat is less than or equal to 0.54?

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