How does the presence of angled lines positioned at both ends of a straight line influence the interpreted length of the straight line?

A. Inward-facing angled lines make the straight line appear to be longer than it actually is.

B. Outward-facing angled lines make the straight line appear to be longer than it actually is.

C. Outward-facing angled lines make the straight line appear to be shorter than it

actually is.

D. Angles up to 7 degrees cause the Müller-Lyer illusion to occur; after that, the angle has

almost no influence.

On a certain portion of an experiment, a statistical test result yielded a p-value of 0.21. what can you conclude? 2(0.21) = 0.42 < 0.5; the test is not statistically significant. if the null hypothesis is true, one could expect to get a test statistic at least as extreme as that observed 21% of the time, so the test is not statistically significant. 0.21 > 0.05; the test is statistically significant. if the null hypothesis is true, one could expect to get a test statistic at least as extreme as that observed 79% of the time, so the test is not statistically significant. p = 1 - 0.21 = 0.79 > 0.05; the test is statistically significant.