Can the null hypothesis be a greater than or less than or is it always equals?
Q: On occasion, the null hypothesis may be written with either . C True False
A: Testing of Hypothesis: Testing of hypothesis is a rule which, when the sample values have been…
Q: What is the value of the probabilistic expression P(-2.1<Z<1.3)?
A: P(-2.1<Z<1.3) =?
Q: Claim: A majority of adults would erase all of their personal information online if they could. A…
A: Given: A software firm conducted survey for majority of adults who would erase all of their…
Q: In a Chi-square analysis, what condition causes one to reject (fail to accept) the null hypothesis?
A: Causes to reject Null hypothesis in Chi-square
Q: A graduate student beleves that people consider faces with more contrast between lip color and skin…
A: The given hypothesis is, Null hypothesis: H0: The level of contrast between lip color and skin tone…
Q: A politician claims that at least 68% of voters support a decrease in taxes. A group of researchers…
A: Given that a politician claims that at least 68% of voters support decrease in taxes.Null hypothesis…
Q: A rehabilitation counselor believes that an increase in the number of social visits to a patient…
A: Null hypothesis: That is, the symbol with strictly less than or greater than and not equals cannot…
Q: a test to determine if mean weekly profit for a small business is more than $100 higher when…
A: Population mean μ =100
Q: Which pair of the hypotheses would be correct for the following claim: Claim: The percentage of…
A:
Q: If the null and alternative hypothesis are respectively: H0:μ ≤ 50; H1: μ> 50, then what tailed test…
A: Given that,H0 : u ≤ 50H1 : u ≥ 50
Q: Which of the following is the correct definition of Power? It is the likelihood that an…
A: Power is defined as the potential of the test to reject the null hypothesis in a correct way/manner.
Q: Determine whether the claim stated below represents the null hypothesis or the alternative…
A: Given
Q: What is an example research project in which a one-sample Z-test would be appropriate? Write out, in…
A: A one-sample z-test is used to find the likelihood of difference between a group or sample from the…
Q: The evidence against the null hypothesis mounts as the p-value gets: A. Larger and larger B.…
A: The probability of determining a test statistic value at least as extreme as the observed value…
Q: Suppose the frequency of true casual claims in medicine is 1/10-one tenth of the claims to the…
A: Given: Null Hypothesis: There is no probabilistic dependence Causal Hypothesis: There is…
Q: Determine whether the claim stated below represents the null hypothesis or the alternative…
A: Given: Claim: more than 83% of people
Q: A researcher selects a sample and administers a treatment for anxiety to the individuals in the…
A: In general, the null hypothesis hypothesized the exact opposite of purpose of the research and it…
Q: A company manager wants to compare the satisfaction levels of his customers from two stores…
A:
Q: Express the null hypothesis H0 and the alternative hypothesis Ha in symbolic form. A company claims…
A: Population mean μ =14
Q: When you fail to reject the null hypothesis for a two-way chi-square test, you can conclude that:…
A: When you fail to reject the null hypothesis for a two-way chi-square test, you can conclude that:
Q: In a company, a hypothesis test is carried out to verify that the weight of the products delivered…
A:
Q: A graduate student beleves that people consider faces with more contrast between lip color and skin…
A: The given hypothesis is, Null hypothesis: H0: The level of contrast between lip color and skin tone…
Q: Claim: 68% of workers indicate that they are mildly dissatisfied with their job. Express the null…
A: Denote p as the true proportion of workers, who indicate that they are mildly dissatisfied with…
Q: Not rejecting the null hypothesis when it is true would also mean that the alternative hypothesis is…
A: Here We will use Properties of Hypothesis
Q: Is the statement Ho: 14 = 6 a valid null hypothesis? O No, equalities are not permitted in the null…
A: It is clear that the null hypothesis states that there is no difference between the population mean…
Q: In a population of fish, approximately 42% are female. A test is conducted to see if in fact the…
A: It is given that the population percentage of females fish (p) is 42%. To test whether the…
Q: Make 1 real-life problem with a solution in any of the following topics; 2. Preforming hypothesis…
A: A paired t test is used when the study is interested in difference between two variables with…
Q: Determine whether the claim stated below represents the null hypothesis or the alternative…
A: Each hypothesis testing has two statements. Hypothesis is the statement of population parameter. Two…
Q: Shooting percentages for the golden state warriors basketball 3P% FG% 38.2 47.5 36.4 46.9 37.6 46.8…
A: 2022-2338.247.52021-2236.446.92020-2137.646.82019-2033.443.82018-1938.549.12017-1839.150.32016-1738.…
Q: laim: A majority of adults would erase all of their personal information online if they could. A…
A: We have given that- A majority of adults would erase all of their personal information online if…
Q: Determine whether the claim stated below represents the null hypothesis or the alternative…
A: From the provided information, The claim is that more than 87% of people had at least one health…
Q: Identify the null and the alternative hypotheses (NO need to show work in "show work" box). An…
A:
Q: Which of the following statements are TRUE? I. Increasing the significance level of a test will…
A: Type I Error:A Type I error occurs when a statistical test incorrectly rejects a true null…
Q: A cell phone manufacturing company claims that their phone batteries last up to 48 hours without a…
A: Given that A cell phone manufacturing company claims that their phone batteries last up to 48 hours…
Q: H1: u > uo is an upper tailed hypothesis test True or False
A: Given that H1: u > uo
Q: Identify if its TYPE 1 or TYPE II if there is any committed in each of the following situations. 1.…
A:
Q: Find the P-value.
A: The descriptive analysis is conducted using EXCEL. The software procedure is given below: Enter the…
Q: When the null hypothesis is not rejected in the Test for Independence, it means that the variables…
A: We have given that, When the null hypothesis is not rejected in the Test for Independence, it means…
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- Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject the null hypothesis? A report claims that more than 83% of households in a specific county struggle to afford basic necessities. Does the claim represent the null hypothesis or the alternative hypothesis? a statement of equality, it represents the Since the claim hypothesis.Express the null hypothesis H and the alternative hypothesis Hin notation form in the following scenarios: The mean annual income of workers who are college graduates greater than 120,000.00 a year.f) The superintendent of Hospital 2 performed the Goodness of Fit Test to test whether 30% of the patients go to Hospital 1, 15% of the patients go to Hospital 2 and 55% of the patients go to Hospital 3. Given: The superintendent found that the p-value for the test is 0.00218. Let: Pi = be the proportion of patients at Hospital i p2 = be the proportion of patients at Hospital 2 p3 = be the proportion of patients at Hospital3
- Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject the null hypothesis? A researcher claims that less than 12% of people had no health care visits in the past year. Does the claim represent the null hypothesis or the alternative hypothesis? Since the claim ▼ contains does not contain a statement of equality, it represents the ▼ alternative null hypothesis. (a) How should you interpret a decision that rejects the null hypothesis? There is ▼ sufficient insufficient evidence to ▼ support reject the claim that less than 12% of people had no health care visits in the past year. (b) How should you interpret a decision that fails to reject the null hypothesis? There is ▼ insufficient sufficient evidence to ▼ support reject the claim…The National Association of Realtors reported that 26% of home buyers in the state of Florida are foreigners in 2012. The correct hypothesis statement to test the validity of this report would be a. O b. O c. d. H0: p = 0.26; H1: p + 0.26. H0: p = 0.26; H1: p > 0.26. H0: p = 0.26; H1: p < 0.26. H0: p = 0.26; Hl: p = 0.26.A popular uprising that started on January 25, 2011 in Egypt led to the 2011 Egyptian Revolution. Polls show that about 69% of American adults followed the news about the political crisis and demonstrations in Egypt closely during the first couple weeks following the start of the uprising. Among a random sample of 30 high school students, it was found that only 17 of them followed the news about Egypt closely during this time. (Source: Gallup Politics, Americans' Views of Egypt Sharply More Negative, data collected February 2-5, 2011).
- A random group of customers at a fast food chain were asked whether they preferred hamburgers, chicken sandwiches, or fish sandwiches. The restaurant's marketing department claims that 45% of customers prefer hamburgers, 45% of the customers prefer chicken sandwiches, and 10% of the customers prefer fish sandwiches. Is there evidence to reject this hypothesis at = 0.05? Plans Hamburgers Chicken Fish Number of students 34 18 8 Group of answer choices A. There is evidence to reject the claim that the customers' preferences are distributed as claimed because the test value 17.2> 5.481 B. There is not evidence to conclude the claim that the customers' preferences are distributed as claimed because the test value 5.481 < 7.815 C. There is not evidence to reject the claim that the customers' preferences are distributed as claimed because the test value 5.481 < 5.991 D. There is evidence to conclude the claim that the customers' preferences are…Suppose that a new Internet company Mumble.com requires all employees to take a drug test. Mumble.com can afford only the inexpensive drug test—the onewith a 5% false-positive rate and a 10% false-negativerate. (That means that 5% of those who are not usingdrugs will incorrectly test positive and that 10% of thosewho are actually using drugs will test negative.) Supposethat 10% of those who work for Mumble.com are usingthe drugs for which Mumble is checking. (Hint: It maybe helpful to draw a tree diagram to answer the questionsthat follow.)a. If one employee is chosen at random, what is theprobability that the employee both uses drugs and testspositive?b. If one employee is chosen at random, what is theprobability that the employee does not use drugs buttests positive anyway?c. If one employee is chosen at random, what is the probability that the employee tests positive?d. If we know that a randomly chosen employee has testedpositive, what is the probability that he or she usesdrugs?If P(A)-=0.7, P(B)=0.3, and P(A and B)=0.07, are A and B independent? A. No B. Yes C. Not enough information
- A null hypothesis must always include the equality sign. True O FalseClaim: A minority of adults would erase all of their personal information online if they could. A software firm survey of 453 randomly selected adults showed that 45% of them would erase all of their personal information online if they could. Complete parts (a) and (b) below. a. Express the original claim in symbolic form. Let the parameter represent the adults that would erase their personal information. b. Identify the null and alternative hypotheses.Researchers conducted a study to determine whether the majority of community college students plan to vote in the next presidential election. They surveyed 650 randomly selected community college students and found that 55% of them plan to vote. Which of the following are the appropriate null and alternative hypotheses for this research question? H 0 : p = 0.50 Ha: p ≠ 0.50 H 0 : p = 0.50 Ha: p > 0.50 H 0 : p = 0.55 Ha: p ≠ 0.55 H 0 : μ = 0.55 Ha: μ > 0.55
