Select the correct answer. Write an expression to represent the sum of three times the square of a number and -7.
In your expression, what is the value of the constant?
O A 1
B. 2
Oc.
w
OD
-7
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Change negative exponents to positive. then solve. round to four decimal places

What is the value of x? enter your answer in the box. x =

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.