Hypothesis Testing Quiz

In formulating the alternative hypothesis, what mathematical symbol is applicable to use in the statement, “The average score of Grade 11 (ABM) in Business Statistics is 75.”?

• a.

• c. =

• d. ≠

A vacuum cleaner consumes less than 46 kwh per year. What hypothesis test can you use in this claim?

• a. left-tailed

• b. right- tailed

• c. null hypothesis

• d. alternative hypothesis

Which of the following steps is not included in formulating a hypothesis?

• a. Identify the claim to be tested.

• b. Translate the claim into mathematical symbols/notations.

• c. Use the data about the sample then compute the test statistic.

• d. Formulate first the null hypothesis and then the alternative hypothesis.

A scientist invented a substance that increases the life of an automobile battery. If the mean lifetime of the battery is 24 months, then what are his hypotheses?

• a. 𝐻𝑜: 𝜇 =24, 𝐻𝑎: 𝜇 ≠ 24

• b. 𝐻𝑜: 𝜇 =24,𝐻𝑎: 𝜇 > 24

• c. 𝐻𝑜: 𝜇 = 24, 𝐻𝑎: 𝜇 ≤ 24

• d. 𝐻𝑜: 𝑝 = 24, 𝐻𝑎: 𝑝 > 24

“The introduction of modern computers affects the performance of the students.” What kind of hypothesis is it?

• a. Null

• b. Mean

• c. alternative

• d. standard deviation

Consider this statement: “New cars are expected to last an average of at least three (3) years before needing major service.” Which of the following is the null hypothesis?

• a. 𝐻𝑜: µ ≤ 3

• b. 𝐻𝑜: µ 3

• d. 𝐻𝑜: µ ≥ 3

Which is the correct null hypothesis of the claim below? “Students take an average of less than five (5) years to graduate from college.”

• a. 𝐻𝑜: µ = 5

• b. 𝐻𝑜: µ ) for the null and alternative hypotheses - 𝐻𝑜: µ __ 300 𝐻𝑎: µ __ 300?

• c. ≤,≥

• d. = ,>

This hypothesis states that there is no difference between population parameters and the hypothesized value.

• a. hypothesis

• b. null hypothesis

• c. alternative hypothesis

• d. two-tailed hypothesis

When the value of parameter has significant difference with the hypothesized value, then it is called ________________.

• a. one-tailed test

• b. two-tailed test

• c. null hypothesis

• d. alternative hypothesis

What is the alternative hypothesis in the following statement? “The number of defective batteries produced by the company is not equal to 15 batteries a day as claimed by the manager.”

• a. µ = 15

• b. µ ≠ 15

• c. µ >15

• d. µ < 15