If the observed statistic  exceeds the critical ratio, what can we say about the p value with respect to the alpha level? A. p < α B. p > α

For a population with μ  = 80 and σ = 10,the z-score corresponding to X = 85 would be?

You are conducting a two-tailed test of a claim about a population proportion .If α=0.02, find the positive critical value, to two decimal places.   _____________

QUESTION: The test statistic of z=−2.31 is obtained when testing the claim that p=1/6. a. Using a significance level of α=0.01​, find the critical​ value(s). A. The critical​ value(s) is/are z=___ B. Should we reject H0 or should we fail to reject H0​? GRAPHS YOU'LL NEED FOR PART (A):

Please see attached statistical mathematics question. How to find the constant c so that the signicance level is alpha = 0.05.and determine the power function of the test?

In testing the hypotheses H 0 : p = 0.50 H0:p=0.50 versus H A : p ≠ 0.50 HA:p≠0.50 , a sample of 100 observations produces a test statistic z = 0 z=0 . What is the  p p -value for this test? a1.0000 b 0.6915 c 0.5000 d 0.0000 cNone of the above.

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18% of all college students volunteer their time. Is the percentage of college students who are volunteers smaller for students receiving financial aid? Of the 392 randomly selected students who receive financial aid, 55 of them volunteered their time. What can be concluded at the αα = 0.01 level of significance?  H0:  H1: The test statistic ? t z  =  (please show your answer to 3 decimal places.) The p-value =  (Please show your answer to 4 decimal places.) The p-value is ? > ≤  α

The mean of the random variable X is ux = 38 and the coefficient of variation is Vx = 0.37. Let Z be the standard form of X. If the result of an experiment is X = 4, what is the corresponding value of Z? QUESTION 8 If the cumulative distribution function for X is Fx(x) function, and it has to return an angle in radians, not degrees. 1 1 +tan (a*), what is P(0 < X < 1.20)? Note that tan 1 is the arctangent 2