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In 280 trials with a professional touch therapist, correct responses to a question were obtained 1223 times. The P-value of 0.979 is obtained when testing the claim that p > 0.5 (the proportion of correct responses is greater than the proportion of 0.5 that would be expected with random chance). What is the value of the sample proportion? Based on the P-value of 0.979, what should we conclude about the claim that p > 0.5?
a. Refer to Exercise 3 and distinguish between the value of p and the P-value
b. If the P is low the null must go. If the p is high, the null will fly. What does this mean?
Find out the suitable critical value(s) for this situation given a 0.05 significance level. Find out/compute the value of sample test statistic.
When the names of all the students at Omega University were dropped to a fishbowl, they would include:
I survey 50 potential consumers regarding their interest in the product, 34 express an interest in purchasing it. The maximum price each would be willing to pay is shown below.
Inventory manager for Itex received wheels bearing from Wheel - Rite a small producer of metal parts , Unfortunately , Wheel -rite can only produce 500 wheel bearings from wheel rite each year.
Twelve cases of leukemia are reported in people living in a particular census tract over a 5-year period. Is this number of cases abnormal if only 6.7 cases would be expected based on national cancer-incidence rates?
Given that X1 is in the model, does X2 contribute to predicting the dependent variable at the .05 significance level?
Assume the observed value of the test statistic is 1.53. What is the smallest level for which there is sufficient evidence to reject H 0 (i.e. the p-value for this test)?
The 'interaction effect' was also important. By using the means in the table above write a statement explaining how the anti-anxiety drug appears to affect anxiety. Are the outcomes consistent with the hypothesis proposed by the researchers?
Shall we reject the hypothesis that the population mean is 6.0? Interpret the result.
At 95% confidence using the critical value approach, determine if the proportion of females in the company is significantly less than 50%.
What is the probability that more than 200 cars will require service work in a particular month?
Calculate and interpret standard error of estimate se and coefficient of determination R2 for these data.
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