Friday
April 18, 2014

Homework Help: statistics

Posted by Megan on Friday, November 11, 2011 at 2:30pm.

A nationwide study indicated that 27% of adults said that chocolate was their favorite ice cream flavor. A simple random sample of 150 adults is obtained.
A.) Describe the sampling distribtuion of p, the sample proportion of adults whose favorite ice cream flavor is chocolate. State the type of distribution, find its mean and the standard deviation.
B.) In a random sample of 150 adults, what is the probability tha at most 22% will say that their favorite ice cream flavor is chocolate?
C.) In a random sample of 150 adults, what is the probability that at most 22% and 30% will say that their favorite ice cream flavor is chocolate?
D.) Would it be unusual if a random sample of 150 adults reulted in 27 people that said that their favorite ice cream flavor was chocolate? Explain why yes or why no.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

statistics - According to a USA Today poll conducted in February 2009, 83% of ...
Statistics - In a poll of 1,004 adults, 93% indicated that restaurants and bars ...
Elements of Statistics - the world health organization's center of aids research...
Statistics - In a Gallup poll of 1038 adults, 540 said that second-hand smoke is...
Statistics - Do more than 50% of US adults get enough sleep? According to the ...
statistics - In a gallup poll of 1,038 adults, 540 said that second hand smoke ...
statistics - 1. In a Gallup poll of 1,038 adults, 540 said that second-hand ...
statistics - 1. In a Gallup poll of 2,040 adults, 956 said that second-hand ...
Statistics - A study was conducted in order to estimate u, the mean number of ...
statistics - A CBS/New York Times poll found that 350 out of 757 adults said ...

Search
Members