6.1 Sampling Distribution

These symbols represent the mean and standard deviation for which of the following distributions?

• The Population
• The Sample
• The Sampling Distribution

What happens to the shape of a sampling distribution of sample means as n increases?

• It becomes narrower and bimodal.
• It becomes narrower and more normal.
• It becomes wider and skewed right. 
• It becomes wider and more normal. 

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 Suncoast students believe in Santa. You take a sample of 50 students and find that 15 of them believe in Santa. What does 15/50 represent?

• n

• P

• phat

• standard deviation

Tags

CCSS.HSS.IC.B.4

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

Tags

CCSS.HSS.IC.B.3

The average annual salary for 35 of a company's 1200 accountants is $68,000.

• parameter
• statistic

Sixty-two of the 97 passengers aboard the Hindenburg airship survived its explosion.

• parameter
• statistic

Tags

CCSS.HSS.IC.B.3

A distribution showing the sample means of all sample of size n of a population is called

• Normal Distribution
• Binomial Distribution
• Sampling Distribution
• Uniform Distribution

Tags

CCSS.6.SP.A.3

The mean of the sampling distribution is the same as the mean of the population.

• True

• False

3 Sampling distributions were created with 3 different sample sizes of 10, 50, and 100. Which sampling distribution goes with which sample size?

• Curve 1: 10

  Curve 2: 50

  Curve 3: 100

• Curve 1: 50

  Curve 2: 10

  Curve 3: 100

• Curve 1: 100

  Curve 2: 50

  Curve 3: 10

• Curve 1: 10

  Curve 2: 100

  Curve 3: 50