An elementary school claims that the variation in reading score of its fourth grade students is less than some value. Determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed. O two-tailed O left-tailed O right-tailed
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A: We have to identify type of test.
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A: A beverage company claims that the mean amount of soda in their bottles is at least 12 ounces.
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A: Sol:- Two tailed test Hypothesis can be modeled as :-H0: μ = μ0Ha: μ ≠ μ0 Correct choice :-
Q: Identify the type I error and the type II error that corresponds to the given null hypothesis for a…
A: Type I error (α): The probability of rejecting the null hypothesis when it is actually true is…
Q: An elementary school claims that the variation in reading score of its fourth grade students is less…
A: Note: If the alternative hypothesis is less than case, then the tail of the test is left-tail test.…
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A: Rejection rule: Reject the null hypothesis if p-value is less than the level of significance.
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A: we have find given hypothesis..
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A: A hypothesis is said to be one (or left tailed), if the population parameter is less than some…
Q: In the absence of compelling reasons for a one-tailed test, which test must be used?
A:
Q: 1) Four drug companies are studying the effect of their new drugs. In its clinical trials, company A…
A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a…
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Q: Suppose we want to test the claim that the proportion of Californians who prefer single-family home…
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Q: An elementary school claims the mean score on the district reading test of its fourth grade students…
A: Given Information: An elementary school claims the mean score on the district reading test of its…
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A:
Q: Which of the following statements comparing one-tailed with two-tailed hypothesis tests is correct?…
A: Statement a: Correct. Let α be the level of significance, Then, the…
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A: Given information: 1) The value that appears most often in the data set is called mode of the…
Q: The owner of a professional basketball team claims that the mean attendance at games is over 17,000…
A: As the direction is specified we easily can find the type of hypothesis.
Q: For a left-tailed test, if the p-value we reject the null hypothesis O True O False
A: Fir a left tail test ,if p value <alpha ,we reject the null hypothesis
Q: If you use a 0.05 level of significance in a two-tail hypothesis test, what decision will you make…
A: Alpha = 0.05 Two tailed test Zstat = 1.2
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A: Null hypothesis is the statement of the no difference whereas the alternative hypothesis states the…
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A: According to the given information, we have H0: p≥0.69Ha: p<0.69
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A: Here we need to choose from the correct option. The claim is that the mean attendence at football…
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A: a) This is a one-tailed test, since the statistics professor tries a statistical software whether it…
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A: Test is that whether the average attendance at games is over 80,000.
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A: Answer : a) Null and alternative hypothesis as follows: This is a right tailed test.
Q: What is the p-value if, in a two-tail hypothesis test, ZSTAT = +2.00?
A: Given, A two-tailed test with z-stat=+2.00
Q: An investigator wishes to determine whether Stanley Kaplan significantly increases SAT scores. From…
A: The test is to check whether Stanley Kaplan significantly increases SAT scores.
Q: The dean of a major university claims that the mean number of hours students study at her University…
A: Given that, The dean of a major university claims that the mean number of hours students study at…
Q: An elementary school claims that the variation in reading score of its fourth grade students is less…
A: Given,claim: the variation in reading score of its fourthgrade students is less than some value.
Q: 9) A brewery claims that the mean amount of beer in their bottles is at least 12 ounces. Determine…
A: The claim is that the mean amount of beer in their bottles is at least 12 ounces.
Q: A brewery claims that the mean amount of beer in their bottles is at least 12 ounces. Determine…
A:
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Q: A researcher claims that 75% of votors favor gun control. Determine whether the hypothesis test for…
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A: On observing the alternative hypothesis, it is clear that this is a two-tailed test.
Q: In what way is heuristics linked to hypotheses?
A: Heuristic hypothesis is the temporary prediction of unknown which is made to simplify the solution…
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A: null hypothesis is a statement that there is no relationship Alternative hypothesis is a statement…
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- Each day for 200 days, a quality engineer samples 144 fuses rated at 15 A and measures the amperage at which they burn out. He performs a hypothesis test of H0 : μ = 15 versus H1 : μ ≠ 15, where μ is the mean burnout amperage of the fuses manufactured that day. a) On 10 of the 200 days, H0 is rejected at the 5% level. Does this provide conclusive evidence that the mean burnout amperage was different from 15 A on at least one of the 200 days? Explain. b) Would the answer to part (a) be different if H0 had been rejected on 20 of the 200 days? Explain.A manufacturer of potato chips would like to know whether it's bag filling machine works correctly at the 405 gram settting. Is there sufficient evidence at the 0.05 level that the bags are underfilled? Assume the population is normally distributed. State the null and alternative hypothesis.Amayor claims that more than70% of people in her city support her policies. -State the claim -State the opposite of the claim -State the null hypothesis -State the alternative hypothesis -State the type of test (left tailed, right tailed, or two tailed) -Use α = 0.05 to find the critical z-value used to test the null hypothesis
- The mean age of lawyers in New York is 50.7 years. A) Null and alternative hypotheses B) Indicate whether the the hypothesis is left, right, or two tailedBased on this, we should the null hypothesis. Thus, the final conclusion is that ... The results are statistically insignificant at αα = 0.05, so there is insufficient evidence to conclude that applicants with easy to pronounce last names are more likely to get called for an interview compared to applicants with difficult to pronounce last names. The results are statistically significant at αα = 0.05, so there is sufficient evidence to conclude that the proportion of the 563 applicants with easy to pronounce names who got called for an interview is greater than the proportion of the 809 applicants with difficult to pronounce names who got called for an interview. The results are statistically significant at αα = 0.05, so there is sufficient evidence to conclude that among all possible applicants, people with easy to pronounce last names are more likely to get called for an interview compared to people with difficult to pronounce last names. The results are statistically…The record of a casualty insurance company show that , in the past, its clients have had a mean of 1.7 auto accidents per day with a variance of 0.0025. The actuaries of the company claim that the variance of the number of accidents per day is no longer equal to 0.0025. Suppose that we want to carry out a hypothesis test to see if there is support for the actuaries' claim. Stat the null hypothesis H0 and the alternative hypothesis H1 that we would use this test. H0: ____ H1: _____
- A sample of 100 flounder have a sample mean weight of 21.5 grams. Scientists wish to perform a hypothesis test to determine if the mean weight differs from 20 grams. State the appropriate null and alternative hypotheses.A magazine reported that at the top 50 business schools in a region, students studied an average of 11.2 hours. Set up a hypothesis test to try to prove that the mean number of hours studied at your school is different from the reported 11.2-hour benchmark. State the null and alternative hypotheses. Choose the correct answer below. A. H0: X=11.2 H1: X≠11.2 B. H0: μ=11.2 H1: μ≠11.2 C. H0: α≠11.2 H1: β=11.2 D. H0: α=11.2 H1: α≠11.2 E. H0: β≠11.2 H1: β=11.2 F. H0: β=11.2 H1: β≠11.2 G. H0:μ≠11.2 H1: μ=11.2 H. H0:μ≠11.2 H1: X=11.2 I. H0:μ=11.2 H1:X≠11.2 J. H0: X≠11.2 H1: X=11.2 K. H0:α≠11.2 H1: α=11.2 L. H0:α=11.2 H1:β≠11.2 What is a Type I error for your test? A. Concluding that the mean number of hours studied at your school is not different from the reported 11.2-hour benchmark when in fact it is not different B. Concluding that the…A magazine reported that at the top 50 business schools in a region, students studied an average of 18.1 hours. Set up a hypothesis test to try to prove that the mean number of hours studied at your school is different from the reported 18.1 hour benchmark. State the null and alternative hypotheses.
- 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…In a sample of 81 adults selected from one town, it is found that 8 of them have been exposed to a particular strain of the flu. At the 0.01 level of significance, you wish to test the claim that the proportion of all adults in the town that have been exposed to this strain of flu is 8%. A)Give the null and alternative hypotheses and state whether this is one or two tailed test. B)Compute test statictic. C) Use the traditional method to decide if you should reject the null hypothesis or not. D) Use the P-value method to decide if you should reject the null hypothesis or not.Calculate Pearson’s coefficient of skewness. Hence, describe the shape of thedistribution of the waiting time for counter A and B.