1. Arundel/York

If the null hypothesis is false, then which of the following is accepted?

• Alternative Hypothesis

• Negative Hypothesis

• Null Hypothesis

• Positive Hypothesis

Which is the other term for non-directional test?

• One-tailed test

• Two-tailed test

• Three-tailed test

• Zero-tailed test

What is the value of α when the confidence level 99%?

• 0.01

• 0.05

• 0.1

• 0.5

The sample size is greater than or equal to 30.

• t-test

• z-test

The population variance is known.

• t-test

• z-test

The population variance is unknown.

• t-test

• z-test

The sample size is below 30.

• t-test

• z-test

The Central Limit Theorem is applied.

• t-test

• z-test

A random sample of the starting salaries of 35 randomly selected graduates with bachelor’s degrees last year gave sample mean and standard deviation P12, 000 and P500 respectively.

• t-test

• z-test

The mean household income in a region served by a chain of clothing stores is P20,000 . In a sample of 20 customers taken at various stores the mean income of the customers was P21,500 with standard deviation P2,852.

• t-test

• z-test