Sampling Distributions: Proportions

Front

Mean of the sampling distribution of p-hat when 40% of all U.S. adults went to church last week.

Back

0.4

Front

In a sample of 50 students, 15 believe Monday will be a snow day. What does 50 represent? Options: n, P, phat, standard deviation

Back

n

Front

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

Back

It becomes narrower (closer to the population's true mean) and more normal.

Front

What is the mean of all possible sample proportions when sampling from a population with proportion p?

Back

p

Front

Standard deviation of the sampling distribution when sampling from a population with proportion p.

Back

Front

Probability that less than 32% of 500 dogs are micro-chipped if 30% of all dogs are micro-chipped.

Back

0.8354

Front

Shape of the sampling distribution for 180 kindergarten children with 93% vaccination rate? Options:

The sampling distribution is normal because n > 30

,

The sampling distribution is not normal because nq is < 30

,

The sampling distribution is normal because 93% of 180 is > 10

,

The sampling distribution is normal because np and nq are both > 10

Back

The sampling distribution is normal because np and nq are both > 10

Front

Probability of getting at least 51% Tails in 500 coin flips?

Back

0.3274

Front

Standard deviation of the distribution?

Back

20

Front

Mean of orders shipped within three working days (90% of 100 orders).

Back

0.9