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Determine the standard error of the proportion

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1) There are 500 employees in a dorm, 45% are female. A sample of 60 employees is selected randomly.

1) Determine the standard error of the proportion.

2) What is the probability that the sample proportion (proportion of the females) is between 0.40 and 0.55?

2) A population of 1000 students spends an average of $10.50 a day on dinner. The standard deviation of the expenditure is $3. A simple random sample of 64 students is taken. What is the probability that these 64 students will spend a total of more than $715.21?

Reference no: EM132529234

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