2. Test at the 1% level of significance the hypothesis that the A version of the test is easier than the B version (even though the questions are the same). p-value (round to four decimal places) = Conclusion (write "R" for reject Ho, and "F" for fail to reject Ho):

For c is the null hypothesis rejected?

Need help with #30

A pharmaceutical company has two possible treatments for arthritis, called Drug A and Drug B.  The company does a matched pairs experiment where they give the two drugs to similar people and then measure their improvement on a scale of 1-50.  The data for a sample of size nine is here: Is there statistically significant evidence at the 0.05 level that Drug B results in more improvement than Drug A?The X for the sample: The S for the sample: The P value  the conclusion

You are testing the claim that the proportion of men who own cats is smaller than the proportion of women who own cats. You sample 140 men, and 65% own cats. You sample 60 women, and 40% own cats. Find the test statistic, rounded to two decimal places. 9 € Priv Terr Submit Question Type here to search Esc 4x F1 F2 F3 # N F4 69 F5 da x D

Need help with #19

Ho at the 0.02 level of significance? Do you reject or fail to reject and H,: u=25, H,:4#25 P = 0.028 25, H: u +25 Given O Not sufficient information to decide Ho Reject reject H 4. Fail to reject

Q1. A psychologist conducted a study on the relationship between introversion and shyness. The values are results for scales of introversion and shyness. High positive scores on each scale indicate high introversion or shyness; and high negative scores indicate low introversion or shyness. Data collected from 10 people as follows: Introversion 4 -7 -1 0 6 7 -4 -9 -5 8 Shyness 11 -7 -1 -3 0 7 -1 -8 -1 5 a) Compute the correlation coefficient relating introversion and shyness scores. b) Find the regression equation which predicts introversion from shyness. c) What introversion score would you predict from a shyness score of 7?

K Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 582 randomly selected adults showed that 57% of them would erase all of their personal information online if they could. Find the value of the test statistic The value of the test statistic is (Round to two decimal places as needed.).