Eight students were given a pretest to measure their public

Assignment Help Basic Statistics

Reference no: EM13622103

Eight students were given a pretest to measure their public speaking anxiety. Then, they completed a workshop to reduce their anxiety. Upon completion of the workshop, the students were given a posttest. At the 0.05 significance level, can one conclude that the workshop reduced their anxiety? Data are shown below (note: a lower score indicates a lower anxiety level). Use the Sign Test and the Signed Rank Test.

Pretest 23 26 31 39 23 21 28 27

Posttest 22 29 27 29 33 21 25 28

State the hypotheses for the Sign Test.

Display the test Statistic S (the # of plus signs).

Determine the p-value using a binomial distribution graph.

Draw a conclusion and interpret your results (i.e. answer the question being posed).

State the hypotheses for the Signed Rank Test.

Manually calculate W+. Show work for full credit.

Determine the p-value using Table 8 (posted on blackboard).

Draw conclusions and compare these conclusions to your conclusions in part (d).

Reference no: EM13622103

Questions Cloud

Calculate the highest velocityacceleration and jerk that : a cam is to be desinged for an automated part loader.using the motion equationsconstruct a chart that tabulates

Two kg of a mixture having an analyis of on a mass basis of : two kg of a mixture having an analyis of on a mass basis of 30 nitrogen 40 carbon dioxide 30 oxygen is compressed

From a horizontal distance of 00540 m a particle of mass : a charge of -2.78 oc is fixed in place. from a horizontal distance of 0.0540 m a particle of mass 9.02 x 10-3 kg and

The inner and outer surfaces of a cell membrane carry a : the inner and outer surfaces of a cell membrane carry a negative and positive charge respectively. because of these

Eight students were given a pretest to measure their public : eight students were given a pretest to measure their public speaking anxiety. then they completed a workshop to reduce

What nominal annual rate of return would you recieve if you : a well-known industrial firm has issued 1000 bonds that carry 4 nominal annual interest paid semiannually. the bonds

Price scanners at o-mart are supposed to produce no more : price scanners at o-mart are supposed to produce no more than 2 errors. is this under-stated? we randomly sample n1000

Photorefractive materials i need 3 pages that explain : i need 3 pages that explain photorefractive materials. also i attached an image that the professor mentioned on this

Which is perfectly flexible infinitely strong and : a 10 gram mass is attached to the end of a 2 meter string which is perfectly flexible infinitely strong and weightless.

User Account

All Pages