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Directions: For each pair of null and alternative hypotheses, determine whether the set is a valid set of hypotheses, write Y for yes and N for no.
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- Let’s say your grandfather is 72 years old and your question is “Are my classmates’ grandfathers, on average, older than mine is”? What would be the null and alternative hypotheses in this scenario? Group of answer choices H0 : The population average age is less than 72. Ha : The population average age is greater than or equal to 72. The population average age is greater than 72. Ha : The population average age is less than 72. H0 : The population average age is equal to 72. Ha : The population average age is less than 72. H0 : The population average age is equal to 72. Ha : The population average age is greater than 72.In a study of pain relievers, 25 people were given product A, and 16 experienced relief. In the same study, 100 people were given product B, and 53 experienced relief. Fill in the blanks of the statement below to make the statement the most reasonable possible. Product v performed worse in the study because % failed to get relief with this product, whereas only O % failed to get relief with Product ?In a population of 9500 subjects, 76% possess a certain characteristic. In a sample of 400 subjects selected from this population, 80% possess the same characteristic. How many subjects in the population and the sample, respectively, possess this characteristic? Enter the exact answers. Population: i Sample: i Save farl
- Suppose that BC financial aid alots a textbook stipend by claiming that the average textbook at BC bookstore costs $ 52.86. You want to test this claim. The null and alternative hypothesis in symbols would be: O Ho:p 52.86 o Ho:p 52.86 O Ho:p 2 52.86 H:p 52.86 H:p < 52.86 o Ho: u 52.86 H:p+52.86 The null hypothesis in words would be: The average price of textbooks in a sample is 5 52.86 O The average of price of all textbooks from the store is less than $ 52.86. O The average price of all textbooks from the store is $ 52.86 The average of price of all textbooks from the store is greater than $ 52.86, The proportion of all textbooks from the store that are less than 52.86 is equal to 50% of Based on a sample of 80 textbooks at the store, you find an average of 64.66 and a standard deviation of 17. The point estimate is: (to 3 decimals) The 90 % confidence interval (use z*) is: to (to 3 decimals) ofSuppose that BC financial aid alots a textbook stipend by claiming that the average textbook at BC bookstore costs $ 68.72. You want to test this claim.The null and alternative hypothesis in symbols would be:Researchers wanted to know if therapy could help smokers quit smoking. Of the 71 smokers they tested, 39 were smoking one year after treatment. Use a 0.05 significance level to test the claim that the majority are smoking one year after treatment. Identify the null and alternate hypotheses using mathematical symbols. ABC T TT Arial 3 (12pt) T 只i ン Click Save and Submit to save and submit. Click Save All Answers to save all answers.
- For each statement, express the null hypothesis ?0 and alternative hypothesis ?1 in symbolic form. More than one-half of all Internet users make on-line purchases. A. ?0:?≥0.5, ?1:?<0.5 B. ?0:?≥0.5, ?1:?<0.5 C. ?0:?≤0.5, ?1:?>0.5D. ?0:?≤0.5, ?1:?>0.59 12 18 The literature for a particular medical procedure says there is a 70% chance it is successful. A surgeon performing the procedure tells his patients that the proportion of procedures he performs that are successful is higher than that. In a random sample of 30 procedures performed by the surgeon, 24 were successful. Use the results of 75 simulations shown in the null distribution below to evaluate the surgeon's claim. 0.40 0.47 0.53 0.60 0.67 0.73 0.80 0.87 0.93 1Determine 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 at most 18% 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 a statement of equality, it represents the hypothesis. (a) How should you interpret a decision that rejects the null hypothesis? There is V evidence to the claim that at most 18% 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 V evidence to V the claim that at most 18% of people had no health care visits in the past year.
- A college professor conducted a survey in order to assess how much money nursing majors spend on course material compared to all other majors. To do so, she selected a random sample of 34 students. Each student was classified as a nursing major or as a non-nursing major. They were then asked how much they spent on books and other materials required for their courses this semester. Here are parallel boxplots summarizing the responses: Based upon the boxplots, which of the following statements cannot be concluded? (A) The range of the distribution of the cost of course materials for nursing majors is about the same as that of non-nursing majors. (B) The maximum cost for non-nursing majors is greater than the median cost for nursing majors. (C) The variability of the cost of course materials for the middle 50% of nursing majors is greater than the variability of the middle 50% for non-nursing majors. (D) The median cost of course materials for nursing majors is over $300 more than…Ann, Jim, John, and Nancy are scheduled to compete in a racquetball tournament. Ann is twice as likely to beat Jim, and Jim is the same level as John. Nancy's past winning record against John is one out of three. Set the problem up in terms of the probablity of Nancy winning the tournament and solve the questions: a. What is the probablity that Jim wins the tournament? b. What is the probablity that a woman will win?dictory Subalterr Contra F Subcontrary Contrary = At least one must be false (not both true, but both could be false) Subcontrary = At least one must be true (not both false, but both could be true) Contradictory = Opposite truth value %3D Subalternation = Truth flows downward; falsity flows upward. Question: Using the Traditional Square of Opposition above, is the following Immediate Inference valid or invalid? All salamanders are reptiles. Therefore, some salamanders are not reptiles. Select one: O a. Invalid O b. Valid Doolc Dro
