If the p-value found in an experiment is 0.85. We reject the null hypothesis. True False
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- Describe the relationship between the null and alternate hypothesis?In 2019 the percentage of people who believed esports should be part of the NCAA was 17%. Suppose we wish to know if that percentage as increased. We take a simple random sample of 65 and 19 of them respond that esports should be part of the NCAA. Can we conclude that the percentage has increased? (a) State the null and alternate hypothesis (b) Can we continue with testing the hypothesis? Why or why not? (c) If possible, proceed with the hypothesis test and reach a conclusion.The currently used medicine is successful for 26% of patients. A new experimental medication is tried on a random sample of 500 patients and is successful for 140 of them. Is the success rate for the new experimental medicine different from 26%? Conduct a hypothesis test with a = 0.01. Be sure to provide answers to the 4-steps of the hypothesis testing technique as presented in class as %3!
- When designing a hypothesis test we can control our type I error by choosing our & after we collect the data. can lower B by raising a. know that increasing the sample size increases the chance of making an error. all of the above. none of the above.Suppose it is claimed that 40% of adults support the practice of changing clocks twice a year in observance of Daylight Saving Time. Believing this claimed value is too high, a sociologist surveys a random sample of 310 adults and finds that 113 of these adults say they support the practice of changing clocks twice a year in observance of Daylight Saving Time. Remember that with hypothesis testing, we always begin with a set of two competing hypotheses. We have a hypothesis that puts forward the claim that is being tested about the population. We call this hypothesis the __________________ hypothesis. We then have a hypothesis that illustrates what we think is really going on in the population. We call this hypothesis the ______________________hypothesis. Using appropriate symbols, our hypotheses in this example are as follows: Ho: p = 0.40 Ha: p < 0.40 Look carefully at the hypotheses presented above. What does the symbol “p” stand for in these…If we perform a paired t test and retain the null hypothesis, then what does this mean if we made measurements on each subject before and after a particular treatment? Group of answer choices There is NO difference in outcomes before and after the treatment was given There is a difference in outcomes before and after the treatment was given
- In what type of practical scenario should we carry out a test of the following null hypothesis? Ho : X = 100 Be concise, but justify your position. Long and rambling responses just give more opportunity to say something silly.Find the P-value of z-score (3.55) if doing a two-tail hypothesis test.A recent drug survey showed an increase in the use of drugs and alcohol among local high school seniors as compared to the national percentage. Suppose that a survey of 100 local seniors and 100 national seniors is conducted to see if the proportion of drug and alcohol use is higher locally than nationally. Locally, 65 seniors reported using drugs or alcohol within the past month, while 60 national seniors reported using them. Conduct a hypothesis test at the 5% level.NOTE: If you are using a Student's t-distribution for the problem, including for paired data, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) Part (a) State the null hypothesis. H0: plocal ≠ pnational H0: plocal > pnational H0: plocal = pnational H0: plocal < pnational Part (b) State the alternative hypothesis. Ha: plocal < pnational Ha: plocal = pnational Ha: plocal ≠ pnational Ha: plocal > pnational…
- Suppose a hypothesis test is performed with a level of significance of 0.05. Then if the null hypothesis is actually true, then there is a 5% chance that the researcher will end up accepting the alternative hypothesis in error. True or FalseSuppose that we reject a null hypothesis at the 0.001 level of significance. The null hypothesis will definitely also be rejected for all the following a- values except for: A. 0.01 B. 0.0005 C. 0.005 D. 0.05 E. 0.002Decide whether you would reject or fail to reject the null hypothesis in the following situations: = 3.50, sD = 1.10, n = 12, a = .05, two-tailed test 95% CI = (0.20, 1.85) t = 2.98, t* = −2.36, one-tailed test to the left 90% CI = (−1.12, 4.36)
