Evaluate negative 15 a Superscript left parenthesis negative 3 right parenthesis baseline b Superscript left parenthesis negative 2 right parenthesis baseline for a equals 2 and b equals negative 3. A. StartFraction 5 over 24 EndFraction
B. negative StartFraction 5 over 24 EndFraction
C. negative 1080
D. negative StartFraction 40 over 3 EndFraction

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.