Sample Proportion and Population Proportion

The Gallup Poll asked a random sample of 1785 adults whether they attended church during the past week.  Let p-hat be the proportion of people in the sample who attended church.  A newspaper report claims that 40% of all U.S. adults went to church last week.  Suppose this claim is true. 
What is the mean of the sampling distribution of p-hat?

• 0.4

• 0.44

• 0.56

• 0.6

28% of all Woodrow students believe Monday will be snow day. You take a sample of 50 students and find that 15 of them believe Monday will be a snow day. What does 50 represent?

• n

• P

• phat

• standard deviation

At a particular college, 78% of all students are receiving some kind of financial aid.The school newspaper selects a random sample of 100 students and 72% of the respondents say they are receiving some sort of financial aid. Which of the following is true?

•  78% is a population and 72% is a sample.

• 72% is a population and 78% is a sample

• 78% is a parameter and 72% is a statistic

• 72% is a parameter and 78% is a statistic

Suppose we have a population that is 49% male.  If we take a random sample from that population and determine the percent of our sample that is male, we refer to this proportion as...

• p

• p-hat
  

• the sample mean

• the sampling distribution

What does this symbol represent?

• population proportion

• parameter

• sample proportion

• population sample

Match the following

• x

• The Sample Size

• n

• The number of individuals in the sample with the specific trait

• p

• The Sample Proportion

• p̂

• The population proportion

​ (a)   is a population proportion. ​ (b)   is a sample statistic.

• p

• p̂

Select the correct description

• Average Percent

• Population Proportion

• Sample Proportion

• Percent Slope of a Distribution

Define the symbol.

• sample size

• standard deviation of sampling distribution of sample means

• population proportion

• sample proportion

Define the symbol.

• population proportion

• population standard deviation

• sample proportion

• sample size