How Do You Determine the Correct Quantile for One-Sided Hypothesis Tests?

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In summary, a one-sided hypothesis test is a statistical test used to determine if there is a significant difference in one direction between a sample mean or proportion and a known or hypothesized value. It differs from a two-sided test in that it only considers one direction of the difference. The steps involved in conducting a one-sided hypothesis test include formulating the null and alternative hypotheses, choosing a significance level, calculating the test statistic, determining the critical value or p-value, and making a decision. The critical value is compared to the test statistic to reject the null hypothesis, while the p-value is compared to the significance level to reject the null hypothesis. A smaller p-value indicates stronger evidence against the null hypothesis.
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Consider a one-sided (greater than) hypothesis tests. For a given level of significance we can find the quantile which satisfies

From the standard Normal Table, find the approximate quantiles for and and indicate which of the following statements is correct.Select one:




Is it the second option?

 
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Standard normal table
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FAQ: How Do You Determine the Correct Quantile for One-Sided Hypothesis Tests?

1. What is a one-sided hypothesis test?

A one-sided hypothesis test, also known as a one-tailed test, is a statistical test used to determine whether there is a significant difference between a sample mean or proportion and a known or hypothesized value in one direction. It is used when there is prior knowledge or a strong belief that the difference will occur in a specific direction.

2. How is a one-sided hypothesis test different from a two-sided test?

In a one-sided hypothesis test, the alternative hypothesis only considers one direction of the difference, while a two-sided test considers both directions. This means that a one-sided test is more specific and has a higher power to detect a significant difference in the desired direction, but it cannot detect differences in the opposite direction.

3. What are the steps involved in conducting a one-sided hypothesis test?

The steps involved in conducting a one-sided hypothesis test are:

  • Step 1: Formulate the null and alternative hypotheses.
  • Step 2: Choose an appropriate significance level (alpha).
  • Step 3: Calculate the test statistic.
  • Step 4: Determine the critical value or p-value.
  • Step 5: Compare the test statistic to the critical value or p-value and make a decision.

4. What is a critical value in a one-sided hypothesis test?

A critical value in a one-sided hypothesis test is a value that is compared to the test statistic to determine whether the null hypothesis can be rejected. It is derived from the chosen significance level and the degrees of freedom in the data. If the test statistic is greater than the critical value, the null hypothesis can be rejected in favor of the alternative hypothesis.

5. What is the p-value in a one-sided hypothesis test?

The p-value in a one-sided hypothesis test is the probability of obtaining a test statistic at least as extreme as the observed value, assuming that the null hypothesis is true. It is compared to the chosen significance level, and if it is less than or equal to the significance level, the null hypothesis can be rejected in favor of the alternative hypothesis. A smaller p-value indicates stronger evidence against the null hypothesis.

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