One tailed test of hypothesis: difference between means
To evaluate the relative merits of two prosthetic devices designed to facilitate manual dexterity, an occupational therapist assigned 21 patients with identical handicaps to wear one or the other of two devices while performing a certain task. 11 patients wore device A and 10 wore device B. The researcher recorded the time each patiend required to perform a certain task, with the following results Device A Device B
mean= 65 seconds mean=75 seconds
variance= 81 seconds^2 variance= 64 seconds^2
Do these data provide sufficient evidence to indicate that device A is more effective than device B
To evaluate the relative merits of two prosthetic devices designed to facilitate manual dexterity, an occupational therapist assigned 21 patients with identical handicaps to wear one or the other of two devices while performing a certain task. 11 patients wore device A and 10 wore device B. The researcher recorded the time each patiend required to perform a certain task, with the following results
Device A Device B
mean= 65 seconds mean=75 seconds
variance= 81 seconds^2 variance= 64 seconds^2
Do these data provide sufficient evidence to indicate that device A is more effective than ...
Solution Summary
Tests the hypothesis: device A is more effective than device B
... the null and alternate hypotheses, the decision ... 0.05 0r= 5.00% Accept alternative hypothesis; The difference... Solution executes a One tailed test for difference...
... equal to M 2 :( M 1 is not equal to M 2 ) No of tails= 2 (Both tails ) This is a 2 tailed (Both tails ) test because we are testing that M 1 not equal ...
... Answer The null hypothesis tested is. ... of Freedom 9 Calculations Area Two-Tail Test FDIST value 0.242286 Lower Critical Value 0.248385855 1-FDIST value ...
... The null hypothesis tested is. ... Upper-Tail Test Upper Critical Value 1.677224196 p -Value 0.00523043 ... Calculations Area For one-tailed tests: TDIST value 0.00523 1 ...
... Suppose two preservatives are extensively tested and determined ... between two related population , two tailed test, F statistic ... 1) If a test of a hypothesis has a ...
... A. Is it a 1 or 2 tail test. Since the question does not give any information on the direction of the test, it is a 2 tail test. ... The null hypothesis tested is. ...
... corresponding to this confidence and one tailed test= 1.6449. ... The solution tests a hypothesis for difference... A hypothesis-testing procedure is used for testing...
