Question

Are you smarter than a second-grader? A random sample of 55 second-graders in a certain school district are given a standardized mathematics skills test. The sample mean score is x=55. Assume the standard deviation of test scores is σ=10. The nationwide average score on this test is 51. The school superintendent wants to know whether the second-graders in her school district have greater math skills than the nationwide average. Use the α=0.01 level of significance and the P-value method with the table.

1) State the appropriate null and alternate hypotheses.

H0:
H1:

This hypothesis test is a two tailed, right or left test?

2) Compute the value of the test statistic. Round the answer to at least two decimal places.

3)Find the P-value. Round the answer to at least four decimal places.

4) Determine whether to reject H0.

reject or do not reject  the null hypothesis H0?

5) State a conclusion.

There is or is not enough evidence to conclude that the calibration point Is set too high, calibration point is set too low or scale is out of calibration

Answer 1