AP Stats 7.1-7.3 So Far

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

• The Population

• The Sample

• The Sampling Distribution of Sample Means

• The Sampling Distribution of Sample Proportions

Tags

CCSS.6.SP.A.3

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

• The Population
• The Sample
• The Sampling Distribution

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

A distribution showing ALL possible values of a statistic (i.e. sample mean or sample proportion) of size n from the same population.

• Normal Distribution

• Binomial Distribution

• Sampling Distribution

• Uniform Distribution

When sampling from a population with proportion p, the sample outcomes will vary.  Which of the following represents the standard deviation of the sampling distribution?

• p

What does the 10% condition do?

• Calculates Standard Deviation

• Checks if the samples are independent

• Checks Normality

• Calculates Probabilities

A sampling distribution for sample proportions is guaranteed to be normal if ...

• n ≥ 30

• the population is normal

• either np or n(1-p) is ≥ 30

• np and n(1-p)are both ≥ 10

• the population is greater than or equal to 10n

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. What is the mean and standard deviation of the population distribution?

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

When sampling from a population with proportion p, the distribution of sample proportions (p-hat) will vary. What will be the mean of all possible sample proportions?

• p