Professor Johnson suspects his new class of social science majors scored higher on his midterm exams than previous years. After measuring the mean of 40 exams, and using a known population standard deviation, he calculates a test statistic of z0=0.73. Using the alternative hypothesis Ha:μ>0.72, determine the p-value of aright-tailed one-mean hypothesis test, with a test statistic of z0=0.73? (Do not round your answer; compute your answer using a value from the table below.)
Use the curve below to help visualize your answer. Select the appropriate test by dragging the blue point to a right-, left- or two-tailed diagram, then set the test statistic on the x-axis to find the p-value.
Based on the p-value, choose the correct interpretation.
1) The probability of observing a value of z0=0.73 or moreif the null hypothesis is true is 23.3%.
2) The probability of observing a value of z0=0.73 or lessif the null hypothesis is true is 23.3%.
3) The probability of observing a value of z0=−0.73 or lessif the null hypothesis is true is $76.7\%$_.
4) The probability of observing a value of z0=0.73 or moreif the null hypothesis is true is 99.7%.
Already registered? Login
Not Account? Sign up
Enter your email address to reset your password
Back to Login? Click here