Stat Q4

When the population standard deviation s is known and the number of sample size is greater than 30, the test statistic to be used is_____

• r

• t

• f

• z

When the number of sample size is less than 30, the test statistic to be used is

• t

• z

• r

• f

Rejecting the null hypothesis, H0, when it is true is called a

• standard error

• type I error

• type II error

• none of the above

What type of Hypothesis states the difference of the parameters of the given variables?

• Valid Hypothesis

• Null Hypothesis

• Alternative Hypothesis

• True Hypothesis

What do we call to the statistical testing procedure where hypothesis needs to be resolved whether it is true or not?

• alternative hypothesis

• statistical hypothesis

• null hypothesis

• test of hypothesis

Which of the following is the null hypothesis?

• The sample comes from a population whose mean is ₱5,500.00.

• The sample does not come from a population whose mean is ₱5,500.00.

• The sample comes from a population whose mean is ₱6,000.00.

• The sample does not come from a population whose mean is ₱6,000.00.

What is the value of α when the level of confidence is 95%?

• 0.025

• 0.05

• 0.25

• 0.5

A characteristic (measure) obtained by using all the data values from a specific population is called a

• factorial

• statistic

• parameter

• none of the above

Which of the following is the alternative hypothesis?

• The sample comes from a population whose mean is ₱5,500.00.

• The sample does not come from a population whose mean is ₱5,500.00.

• The sample comes from a population whose mean is ₱6,000.00.

• The sample does not come from a population whose mean is ₱6,000.00.

Find the area under the standard normal distribution curve between the values z = 1.72 and z = 1.98

• 0.4761

• 0.4573

• 0.0188

• 0.9334