Sample Proportions

A sample is taken of 200 people. The number of people who own a dog was 80.
What is the sample proportion?

• 80

• 0.8

• 0.4

• 35%

A sample is taken of 200 people. The number of people who own a dog was 80.
What is the population proportion?

• 80

• 0.8

• 0.4

• Unknown

30% of all dogs in a city are micro-chipped. In a sample of 50 dogs, what is the probability that less than 12 dogs are micro-chipped?

• 0.237

• 0.189

• 0.177

• 0.126

The symbol for the sample proportion is __________.

• Z_c

• p̂

• E

• q

Select the correct description

• Average Percent

• Population Proportion

• Sample Proportion

• Percent Slope of a Distribution

What does this symbol represent?

• population proportion

• parameter

• sample proportion

• population sample

The symbol for the sample proportion is __________.

• z*

• p̂

• E

• p

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

Match the following

• n

• The Sample Size

• x

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

• p

• The Sample Proportion

• p̂

• The population proportion

A random sample of 100 WHS students found that 53 of them were in possession of a pencil. What is the p-hat for this sample?

• 0.53

• 0.5

• 0.47

• 1