What statistical test is applicable if the population standard deviation is known and the number of samples is greater than 30?

What statistical test is applicable if the population standard is unknown and the number of samples is less than 30?

What statistical test is applicable if the population standard deviation is known and the number of samples is less than 30?

For no. 4-7 The SSG president claims that the average number of hours the students study their lesson is more than 30 hours per week. If 30 students are surveyed and their average is 36 hours per week with standard deviation of 4 hours, is there sufficient evidence to reject the SSG president’s claim at α = 0.05 level of significance?

4. Which of the following statements is a correct null hypothesis?

For no. 4-7 The SSG president claims that the average number of hours the students study their lesson is more than 30 hours per week. If 30 students are surveyed and their average is 36 hours per week with standard deviation of 4 hours, is there sufficient evidence to reject the SSG president’s claim at α = 0.05 level of significance?

5. Which of the following statements is a correct alternative hypothesis?

For no. 4-7 The SSG president claims that the average number of hours the students study their lesson is more than 30 hours per week. If 30 students are surveyed and their average is 36 hours per week with standard deviation of 4 hours, is there sufficient evidence to reject the SSG president’s claim at α = 0.05 level of significance?

6. Is the population standard deviation known?

For no. 4-7 The SSG president claims that the average number of hours the students study their lesson is more than 30 hours per week. If 30 students are surveyed and their average is 36 hours per week with standard deviation of 4 hours, is there sufficient evidence to reject the SSG president’s claim at α = 0.05 level of significance?

7. What is the applicable statistical test?

What is the applicable statistical test for the following given: hypothesis test on population mean; n=25; σ=2.5?

What is the applicable statistical test for the following given: hypothesis test on population mean; n=50; s=7.2?

Which of the following is INCORRECT about formulating hypothesis?