Ms P Math class

What kind of hypothesis is illustrated: The mean score of all Grade 11 students is higher than 75.

• one-tailed test

• two-tailed test

• null hypothesis

• alternative hypothesis

Based on the Central Limit Theorem, when the sample (n) is extremely large and the standard deviation is unknown, what is the statistical test to be used?

• t-test

• z-test

• two-tailed test

• one-tailed test

If the researcher wishes to test the claim that the mean of the population is 75, the appropriate null hypothesis is:

• μ≤75

• μ≥75

• μ=75

• μ≠75

• z-test

• t-test

• two-tailed test

• one-tailed test

If the t-computed value is 1.093 and the critical value is 1.699, what will be the decision?

• reject both hypothesis

• reject the null hypothesis

• do not reject the null hypothesis

• support the alternative hypothesis