QUESTION 12 The dividing point between the region where the null hypothesis is rejected and the region where it is not rejected is known as the Critical Value. O True O False
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Q: what is the test statistic?
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A: We have given that, H0: μ1- μ2 = 0 Ha: μ1- μ2 < 0 Alpha= 0.05 n1= 17 n2= 12
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Q: would the null hypothesis (H0) be rejected or retained
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- What is the obtained value – does the critical value exceed the obtained value? What does this mean in regards to the null hypothesis?The dividing point between the region where the null hypothesis is rejected and the region where it is not rejected is said to be Critical region. TRUE FALSEState a research question. Formulate the hypotheses. Determine the critical value(s).
- If a hypothesis test produces a z-score in the critical region, what decision should be made? a. Reject the alternative hypothesis b. Fail to reject the alternative hypothesis c. Reject the null hypothesis d. Fail to reject the null hypothesisIn a hypothesis test, the null hypothesis states that the population proportion of individuals who support a certain political candidate is equal to 0.6. A sample of size 400 is taken and 175 individuals support the candidate. What is the Z-score for this hypothesis test?If a hypothesis test produces a z-score in the critical region, which decision should be made? a. fail to reject the alternative hypothesis b. fail to reject the null hypothesis c. reject the alternative hypothesis d. reject the null hypothesis
- 1. What is the critical value? 2. Write a statement about the results.What is the Tukey’s test critical value?A researcher wants to find the effect of a special diet on systolic blood pressure. A sample of 7 adults was selected to start them on this diet for 3 months. Based on this information, can it be stated that systolic blood pressure changes with the special diet? What type of hypothesis test will allow us to reach a conclusion in the situation posed above? A. Null B. Bilateral C. Unilateral right rejection zone D. Unilateral left rejection zone
- A local chess club claims that the length of time to play a game has a mean of 43 minutes or more. Write sentences describing type I and type II errors for a hypothesis test of this claim. A type I error will occur if the actual mean of the length of time to play a game is ▼ equal to less than or equal to not equal to greater than or equal to greater than less than 43 minutes, but you ▼ reject fail to reject the null hypothesis, ▼ Upper H 0 : mu greater than or equals 43H0: μ≥43 Upper H 0 : mu not equals 43H0: μ≠43 Upper H 0 : mu equals 43H0: μ=43 Upper H 0 : mu less than or equals 43H0: μ≤43 Upper H 0 : mu greater than 43H0: μ>43 Upper H 0 : mu less than 43H0: μ<43 . A type II error will occur if the actual mean of the length of time to play a game is ▼ greater than less than or equal to less than greater than or equal to equal to not equal to 43 minutes, but you ▼ fail to reject reject the null hypothesis, ▼ Upper H 0…An educator claims that the average salary of substitute teachers in the school districts in his county is less than $90 per day. A random sample of 8 schools districts is selected and the daily salaries are shown below. What is the critical value(s) for this hypothesis test? $90 $86 $90 $85 $100 $85 $90 $85 An educator claims that the average salary of substitute teachers in the school districts in his county is less than $90 per day. A random sample of 8 schools districts is selected and the daily salaries are shown below. What is the critical value(s) for this hypothesis test? $90 $86 $90 $85 $100 $85 $90 $85 -1.895 -1.860 -2.365 -1.645 -1.96If a null hypothesis is rejected at the 0.05 level of significance, it must be rejected at the 0.01 level. True or False?