The proportion of all high school students who watch national news is p = 0.47. A random sample of 50 high school students is selected. Which of the following is the mean of the sampling distribution of p hat ? Mu Subscript p hat = p = 0.47
Mu Subscript p hat = n p = 50 (0.47) = 23.5
Mu Subscript p hat = 1 minus p = 1 minus 0.47 =0.53
Mu Subscript p hat = n (1 minus p) = 50 (1 minus 0.47) = 26.5

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it's is b

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.