According to the Centers for Medicare & Medicaid Services, 21 of nursing homes in the United ...

According to the Centers for Medicare & Medicaid Services, 21 of nursing homes in the United States received five stars in overall ratings on a scale of 1 to 5. A random sample of seven nursing homes was selected.
 
  What is the probability that exactly three of them received five stars?A) 0.0432
  B) 0.0944
  C) 0.1263
  D) 0.1527

Q. 2

The following data represents the ages of a household that consists of five people. Assume that the household is considered a population in this example.
 
  39 37 12 7 7
 
  The variance of this data set is ________.
  A) 200.0
  B) 210.2
  C) 225.6
  D) 241.7

Q. 3

When conducting a hypothesis test comparing two populations with independent samples, the sample sizes must be equal.
 
  Indicate whether the statement is true or false

Q. 4

Once the sample size has been increased to the size of the population, the values of  and  will approach 1.0.
 
  Indicate whether the statement is true or false

Q. 5

The only way to reduce both  and  simultaneously in a hypothesis test is to increase the sample size.
 
  Indicate whether the statement is true or false