Statistics Quiz

What is the parameter of interest in the problem? "A statistician wants to test if the average weight of apples in a farm is less than 200 grams. They have a sample of 20 apples, and the population standard deviation is unknown."

• Mean

• Median

• Proportion

• Mode

A claim that something is happening or has changed, which researchers only accept as true if they have enough evidence to disprove the opposite claim.

• Claim

• Null Hypothesis

• Hypothesis

• Alternative Hypothesis

Which test statistics should be used when X = 15, µ = 14, σ = 3, n = 38, and α = 0.05?

• z-test

• t-test

• acceptance region

• Rejection region

The type of correlation whereas one variable increases, the other variable also increases.

• Negative Correlation

• Positive Correlation

• Zero Correlation

• No Correlation

Which of the following represents the null hypothesis of the problem "Is there a significant relationship between the study habit and the academic performance of the student?"

• There is a significant relationship between the study habit and the academic performance of the students.

• There is a no significant relationship between the study habit and the academic performance of the students.

• There is somewhat significant relationship between the study habit and the academic performance of the students.

• There is significant relationship somehow between the study habit and the academic performance of the students.

It is defined as any numerical quantity used to describe or characterize a system or a given population.

• Parameter

• Point Estimate

• Critical Value

• Mean

Which of the following mathematical symbols represents the null hypothesis of the problem "A survey conducted by college students in their study stated that cellphone owners received an average of 65 texts every day. What parameter should these students consider to prove this claim?"

• Ho: µ=65

• Ho: µ≠65

• Ho: µ>65

• Ho: µ<65

A statement that is always true, unless proven to be false.

• Claim

• Null Hypothesis

• Hypothesis

• Alternative Hypothesis

What is the z-value of the problem: It is claimed that the average weight of a bag of biscuits is 350 grams with a standard deviation of 30.5 grams. Would you agree to this claim, if a random sample of 35 bags of biscuits showed an average weight of 340 grams, using a 0.10 level of significance?

• -1.93

• -1.94

• 1.93

• 1.94

The value derived from the table defined by α in which the computed test statistic will be compared in stating the decision rule for hypotheses testing.

• computed value

• critical value

• mean

• variance