Final answer:
The statement that the number of tests equals the cyclomatic complexity is true. Cyclomatic complexity measures the number of linearly independent paths through a program's source code and helps to determine the necessary number of test cases. Other statements referred to are related to experimental design and statistical testing, not to cyclomatic complexity.
Step-by-step explanation:
The statement that the number of tests to test all control statements equals the cyclomatic complexity is indeed true. Cyclomatic complexity is a software metric used to measure the complexity of a program. It directly measures the number of linearly independent paths through a program's source code. This metric is calculated based on the program's control flow graph and is used to determine the number of test cases required to achieve complete branch coverage.
Statements b and c seems to be referring to concepts of control and test groups in experimental design, which is unrelated to the concept of cyclomatic complexity. Both the control and test group are elements of experimental design and control group must be identical to the test group except for the one variable being tested to ensure that the experiment is fair and results are due to the variable being tested. However, this concept is separate from cyclomatic complexity in software testing.
The other statements presented, 94, 95, and 96, also do not relate to the computation of cyclomatic complexity but rather to statistical tests such as the test for independence and degrees of freedom in statistical hypothesis testing.