# Question

As subjects arrive to participate in an experiment, tables of random numbers are used to make random assignments to either group A or group B. (To ensure equal numbers of subjects in the two groups, alternate subjects are automatically assigned to the other group.) Indicate with a yes or no whether each of the following rules would work:

(a) Assign the subject to group A if the random number is even and to group B if the random number is odd.

(b) Assign the subject to group A if the first digit of the random number is between 0 and 4 and to group B if the first digit is between 5 and 9.

(c) Assign the subject to group A if the first two digits of the random number are between 00 and 40 and to group B if the first two digits are between 41 and 99.

(d) Assign the subject to group A if the first three digits of the random number are between 000 and 499 and to group B if the first three digits are between 500 and 999. *

(a) Assign the subject to group A if the random number is even and to group B if the random number is odd.

(b) Assign the subject to group A if the first digit of the random number is between 0 and 4 and to group B if the first digit is between 5 and 9.

(c) Assign the subject to group A if the first two digits of the random number are between 00 and 40 and to group B if the first two digits are between 41 and 99.

(d) Assign the subject to group A if the first three digits of the random number are between 000 and 499 and to group B if the first three digits are between 500 and 999. *

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