What is a significance level (p value) in statistics?
a. A pre-set threshold of probability at which the researcher will accept or reject the null hypothesis.
b. The level at which statistics finally become meaningful to a stein.
c.one of the other answers are correct
d. The impact that reporting statistics incorrectly could have
Solution
a. A pre-set threshold of probability at which the researcher will accept or reject the null hypothesis.
b. The level at which statistics finally become meaningful to a stein.
What is a significance level (p value) in statistics? a. A pre-set threshold of probability at...
What is a significance level? a. A pre-set level of probability that the results are correct. b. The level at which statistics finally become meaningful. c. A pre-set level of probability at which it will be accepted that results are due to chance (or not). d. The impact that reporting statistics incorrectly could have.
1A. With a significance level of 0.05, you observe a p-value of 0.09. What conclusion should you draw? a. Reject the null hypothesis b. Accept the null hypothesis c. Fail to reject the null hypothesis d. Fail to accept the null hypothesis 1B. With a significance level of 0.05, and a p-value of 0.02, what conclusion should you draw? a. Reject the null hypothesis b. Accept the null hypothesis c. Fail to reject the null hypothesis d. Accept the alternative...
A P-value of 0.12 is calculated on a hypothesis test with a significance level set at 0.01. Which of the following is the correct conclusion for the test? a. Claim the null hypothesis is true b. Fail to reject the null hypothesis c. Reject the null hypothesis d. Claim the alternative hypothesis is true Which of the following are not requirements for using the t-distribution for a hypothesis test concerning μ? (More than one answer may be correct.) a. Sample...
If the p-value for a hypothesis test is 0.027 and the chosen level of significance is α = 0.05, then the correct conclusion is to ________________. reject the null hypothesis not reject the null hypothesis reject the null hypothesis if σ = 10 not reject the null hypothesis if σ = 10
A researcher selects an alpha level of 0.15 for a study. What does this indicate about the statistical analysis of the study? the researcher is willing to accept a 15% chance that the null hypothesis will be rejected incorrectly the study results are likely to reveal a high level of clinical significance of the alternative hypthesis there is a high probability of making a type one error the researcher is willing to accept an 85% chance that the null hypothesis...
Which of the following is TRUE? a. The p-value should always be larger than the selected level of significance. b. If the p-value is smaller than the level of significance, then do not reject the alternate hypothesis. c. If we reject the null hypothesis, it is possible that p-value is larger than the selected level of significance. d. If the p-value is larger than the level of significance, then do not reject the null hypothesis.
Choose the correct definition of significance level from the
list below.
A significance level is
Option 1 and 5 are WRONG
Choose the correct definition of significance level from the list below A significance level is the probability of failing to reject the null hypothesis when the alternative hypothesis is true. the minimum acceptable chance of making a type I error. O the probability that an event occurred as a result of a causative factor rather than by chance. the...
For each problem, select the correct response. (a) What is the P-value of a test of the null hypothesis? A. The probability the null hypothesis is false B. The probability, assuming the null hypothesis is false, that the test statistic will take a value at least as extreme as that actually observed C. The probability the null hypothesis is true D. The probability, assuming the null hypothesis is true, that the test statistic will take a value at least as...
Perform a hypothesis test for the following sample. The significance level alpha is 5%. Sample: 7.9,8.3,8.4, 9.6,7.7, 8.1, 6.8,7.5,8.6,8,7.8,7.4,8.4,8.9,8.5,9.4,6.9,7.7. Test if mean 8.7. Assume normality of the data. 1 Formulate the hypothesis by entering the corresponding signs:"<" ">", "-" or "メ" and numbers. Hint: in your answers use "<>" instead of " " HO: mean H1:mean 2 p-value (rounded to three decimal places) 3 Conclusions, based on the results, which of the following options is correct: A Reject H0 and...
A hypothesis test is performed at the α = 0.05 level of significance. The p-value is determined to be 0.03. Therefore, we know that we would _______________. either reject or fail to reject the null hypothesis, depending on the value of the test statistic. reject the null hypothesis know that a 99% confidence interval would contain the value specified in the null hypothesis. fail to reject the null hypothesis