Statistics and Probability Long Quiz 4th Quarter

What type of error did the 1st image committed?

• Type I

• Type II

• Type III

• Type IV

A group of students wants to test the claim that the average cost of black shoes in SM Hypermarket is more than P427 with a standard deviation of ₱20. Suppose their random sample of 37 black shoes resulted to a mean of ₱435, test the claim at a five-percent level of significance. Compute for the Z value using Central limit theorem.

• 2.43

• 2.42

• 2.41

• 2.44

A farmer believes that using organic fertilizers on his plants will yield greater income. His average income from the past was ₱200,000.00 per year. What will be Null Hypothesis?

The null hypothesis is rejected if the Z-value = -3.14 is less than the critical value = -2.98.

• False

• True

• Cannot be determined

• Both true and false

What is the value for degree of freedom if you have the sample size of 10?

• 9

• 10

• 11

• 12

If you have a sample size of < 30, what test statistics will be use?

• T - Statistic

• Z- Statistic

• Central Limit Theorem

• P-Value

What tailed test will be use if the symbol is directional (< and >)?

• Four-Tailed Test

• Three-tailed Test

• Two-tailed Test

• One-tailed Test

What will be the critical value if you have significance level of 0.05, one tailed test and degree of freedom of 6?

It contains two variable that are being compared to establish the connection from each other.

• Univariate Data

• Bivariate Data

• Multivariate Data

• Trivariate Data

What will be the association in terms of shape/form if it is closely follow the straight lines?

• Linear

• Non-linear

• Positive Direction

• Negative Direction