How do astronomers measure the amount of dark matter in the universe

yall wanna me : )what software controls a computer’s basic functions? a. the central processor b. the bios c. the motherboard d. the operating system

On a certain portion of an experiment, a statistical test result yielded a p-value of 0.18. what can you conclude? 2(0.18) = 0.36 < 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 18% of the time, so 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 82% of the time, so the test is not statistically significant. 0.18 > 0.05; the test is statistically significant. p = 1 - 0.18 = 0.82 > 0.05; the test is statistically significant.

Is the universal urge to strive for perfection in order to overcome feelings of inferiority. a. pleasure principle b. striving for superiority c. collective unconscious d. reality principle