Test Statistic

Find the value of test statistics

• 0.543

• 0.555

• 0.515

• 0.534

In the test statistic, what does the O represent?

• Observed Frequency

• Zero

• Expected Frequency

• Sum

In the test statistic, what does the E represent?

• Observed Frequency

• Zero

• Expected Frequency

• Sum

What is the correct formula for chi-squared statistics?

• Ei - Oi

• Oi - Ei

• Oi + Ei

• Ei + Oi

A librarian of a school claims that all their grade 8 students read an average of 10 storybooks a month with a standard deviation of 2 books. A random sample of 35 grade 8 students read an average of 12 books a month and a standard deviation of 1 book. Test the claim at 95% confidence level.

What is the value of the test statistic?

• 0.33

• 5.92

• -5.92

• -3.98

A librarian of a school claims that all their grade 8 students read an average of 10 storybooks a month with a standard deviation of 2 books. A random sample of 35 grade 8 students read an average of 12 books a month and a standard deviation of 1 book. Test the claim at 95% confidence level.

What is the appropriate test statistic to use?

• r

• t

• z

• annova

Critical Z-value: 2.33, Computed Z-value: 2.465. The computed Z-value falls at the

• Noncritical Region

• Critical Value

• Critical Region

If the variance is unknown and the sample size is small, which test statistic is appropriate?

• one-tailed test

• two-tailed test

• z-test

• t-test

A leader of an association of jeepney driver claims that the average daily take-home pay of all jeepney drivers in Caloocan is ₱350.00. A random sample of 100 jeepney drivers in Caloocan was interviewed and the take home pay was found to be ₱420.00. If 0.05 significance level was used to find out whether the average take home pay is different from ₱350.00 and population variance was assumed to be ₱92.00, what is the appropriate test statistic, and type of test should be used? (Tip: List down μ, σ, s, and xbar first and detect any clues in the statement)

• Two-tailed t-test

• Left-tailed z-test

• Two-tailed z-test

• Right-tailed t-test