p-VALUE
It is the common output of a statistical test. It is used as an alternative to rejection points to provide the smallest level of significance at which the null hypothesis would be rejected.
NULL HYPOTHESIS
It is an indication of how something is expected to function normally without any change.
ALTERNATIVE HYPOTHESIS
Expected change during a test by controlling one or more variables.
Any change from the null being true or the alternative being true will be described numerically by p-value.
p-values are useful tool for interpreting research findings.
p-value interpretation
>0.05 accept the null hypothesis
<or=0.05 reject null hypothesis
CONCLUSION
p-value is the probability the null hypothesis is true.
Low p-value indicates the result is statistically significant.
High p-value indicates the result is not significant.
What does it mean when the statistical significance = p value is! equal 0.051? Select one:...
Which of the following is true of the p-value? Select one: a. It is the probability of rejecting the null hypothesis when the alternative hypothesis is true. b. It is the extreme value of the test statistic obtained when the alternative hypothesis is true. c. It is the smallest significance level at which a null hypothesis can be rejected. d. It is the probability of rejecting the null hypothesis when the null hypothesis is true.
The P-value for a hypothesis test is 0.079. For each of the following significance levels, decide whether the null hypothesis should be rejected. a. alphaequals0.05 b. alphaequals0.10 a. Determine whether the null hypothesis should be rejected for alphaequals0.05. A. Reject the null hypothesis because the P-value is equal to or less than the significance level. B. Do not reject the null hypothesis because the P-value is equal to or less than the significance level. C. Reject the null hypothesis because...
If, in a one-tail hypothesis test, the p-value=0.5122 what is the statistical decision if the null hypothesis is tested at the 0.07 level of significance? What is the statistical decision? A) Since the p-value is less than α=0.07, do not reject H0. B) Since the p-value is greater than or equal to α=0.07, do not reject H0. C)Since the p-value is greater than or equal to α=0.07, reject H0. D) Since the p-value is less than α=0.07, reject H 0...
(1 point) A statistical investigation is conducted to see if the mean of a population of values is equal to 367, or Ho :,-367 HA : #367. A random sample of n = 136 values is taken from this population of values, producing a test statistic of Teale-一0.643 and a P-value of 0.5215. Choose the correct interpretation of the P-value. OA. If the null hypothesis is true, the chance of another sample producing stronger evidence against the null hypothesis is...
2) An experiment is conducted to determine if the mean values are equal or not equal for a P process, The following data on the mean life of the P process are sampled using Pl & P2 samples and the times to failure are indicated as follows: Test the hypothesis at the 5% significance level, that the mean values are equal ? P1 P2 a). What type of statistical test would you apply to test the hypothesis? b) State the...
What is the z-value for a two-sided test of hypothesis for a population mean when the probability of rejecting a true null hypothesis is equal to 0.005? Select one: a. 2.330 b. 1.960 c. 2.810 d. None of the suggested answers are correct. e. 2.575
A one-sample z-test for a population mean is performed. Suppose that the P-value for the test is 0.04. For what significance levels (values of a) can the null hypothesis be rejected? For a = 0.04 For all values of a greater than or equal to 0.04 For a = 0.05, 0.10 For all values of a smaller than 0.04
For a one-tailed hypothesis test (upper tail) the p-value is computed to be 0.034. If the test is being conducted at 95% confidence, the null hypothesis Select one: a. is rejected. b. is not rejected. c. could be rejected or not rejected depending on the value of the mean of the sample. d. could be rejected or not rejected depending on the sample size.
. When we carry out a statistical test with significance level α = 5%, the probability of rejecting the null hypothesis when it is true is 5%. Suppose that we independently select 5 random samples of size 100, and for each sample carry out the same statistical test with significance level 5%. We know that the null hypothesis is true. What is the probability that we reject the null hypothesis at most once out of the 5 tests? (a) 0.02...
03) Answer Option: (fail to reject. Reject) Ho because the P-value is (greater than. Less than or equal to) the significance level. There (is not. Is) sufficient evidence that the mean time interval has charged Listed below are time intervals (min) between eruptions of a geyser. Assume that the "recent" times are within the past few years, the "past" times are from around 20 years ago, and that the two samples are independent simple random samples selected from normally distributed...