Sampling Distributions

28%  of all Woodrow students think we will have a snow day on Monday. If samples of 5 students are repeatedly taken, what will be the distribution of each of their percentage of students who think Monday will be a snow day?

• The  distribution will not be normal because at least of the conditions for normality is not met.
• Normal with a mean of 0.28 and a standard deviation of 0.2
• Normal with a mean of 0.28/5 and a standard deviation of 0.28/0.72
• Normal with a mean of 0.28 and a standard deviation of 0.72.

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

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 28 represent? 

• P
• phat
• standard deviation
• n

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 will be the variance of the sampling distribution of all samples of size 50? 

• 0.063
• 0.004
• 0.388
• 0.006

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 is the probability of getting a sample of size 50 that has 15 or more students who believe Monday will be a snow day? 

• 0.376
• Cannot be determined because the distribution of the sample proportion of samples of size 50 is not normal
• 0.624
• 0.99999

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

CCSS.HSS.ID.A.4