The first unit of the sample is selected at random and then each subsequent unit is picked at a fixed from the previous unit selected in the sample. What sampling technique is this?

2. In a population it is estimated that 20% have a desired trait of interest for the researcher. The researcher wants to know how many people on average he has to draw from a population to get 2 people with the trait. Use rows 20-24 of the Random Number Table to carry out the simulation. Explain clearly how you set up the problem and report your findings. Answer:

Explain the difference between a stratified sample and a cluster sample. (Select all that apply.) In a stratified sample, random samples from each strata are included In a stratified sample, every sample of size n has an equal chance of being included. In a stratified sample, the clusters to be included are selected at random and then all members of each selected cluster are included In a cluster sample, every sample of size n has an equal chance of being included. In a stratified sample, the only samples possible are those including every kth item from the random starting position In a cluster sample, the only samples possible are those including every kth item from the random starting position In a cluster sample, the clusters to be included are selected at random and then all members of each selected cluster are included. In a cluster sample, random les from each strata are included.

An experiment consists of drawing two numbers out of a hat one after the other containing the numbers 1, 3, 5, 6.  The two numbers are then recorded as a 2-digit number. The number drawn is NOT put back in the hat before drawing the second. Do the following:   List the sample space.________________________________   Let F = the event of getting a number whose first digit is odd   Let S = the event of getting a multiple of 6   Find P( F and S) =____________________________________   Find P(F) =______________________________   Find P(F|S) =_______________________________________   Are F and S independent events? ___________Justify_____________   VIII (15) Let E be the event that at least two people out of 4 have the same birth month (not day).   How many outcomes in the Sample space. In other words, compute n(S).________   State in words the complement of E. _____________________________   How many outcomes in the event not E. In other words, compute n(not E). ________…