Formulate the null and alternate hypotheses for the following situations. (That is, identify the correct number ?0 and write ?0: ? = ?0 and the appropriate analogous expression for ?1). - A statistics instructor believes that less than 20% of the students attended the opening function of a film. He surveys 84 of his students and finds that 11 attended the function.
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Formulate the null and alternate hypotheses for the following situations. (That is, identify the correct number ?0 and write ?0: ? = ?0 and the appropriate analogous expression for ?1).
- A statistics instructor believes that less than 20% of the students attended the opening
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- Formulate the null and alternate hypotheses for the following situations. (identify the correct number ?0 and write ?0: ? = ?0 and the appropriate analogous expression for ?1).- The average farm size in a predominantly rural state was 280,851.8 square meter. The secretary of agriculture of that state assures that today it is less. - A statistics instructor believes that less than 20% of the students attended the opening function of a film. He surveys 84 of his students and finds that 11 attended the function.Formulate the null and alternate hypotheses for the following situations. (identify the correct number ?0 and write ?0: ? = ?0 and the appropriate analogous expression for ?1). - Historically, the average July temperature in a region has been 24°C. Maybe this temperature is higher now. - The average rate for a hotel room in a given region is $87,500. A travel agent believes that the average in a particular tourist area is differentThe p-value for a test of the hypotheses and is calculated to be 0.007. Which of the following most closely identifies the meaning of this outcome? The true population proportion is probably 30%. The true population proportion is probably greater than 30%. The sample proportion was probably greater than 30% The true population proportion is probably less than 30%.
- An economist has collected data on the number of house foreclosures. The published share of housing units with a foreclosure filing is 0.47%. The economist believes, based on the data she collected, that the share of housing units with a foreclosure filing is different from 0.47%. What are the null and alternative hypotheses? Select the correct answer below: H0: μ≠0.47%; Ha: μ=0.47% H0: μ=0.47%; Ha: μ≥0.47% H0: μ=0.47%; Ha: μ≤0.47% H0: μ=0.47%; Ha: μ≠0.47%A dental assistant is interested in the proportion of patients that need a root canal. Let the proportion of patients that need a root canal be p. If the dental assistant wanted to know if the proportion of patients that need a root canal is more than 20%, what are the null and alternative hypotheses? Select the correct answer below: H0: p=0.20; Ha: p<0.20 H0: p>0.20; Ha: p=0.20 H0: p=0.20; Ha: p>0.20 H0: μ=0.20; Ha: μ>0.20Formulate the null and alternate hypotheses for the following situations. (identify the correct number θ0 and write H0: θ = θ0 and the appropriate analogous expression for H1).- The average farm size in a predominantly rural state was 280,851.8 square meter. The secretary of agriculture of that state assures that today it is less. - A statistics instructor believes that less than 20% of the students attended the opening function of a film. He surveys 84 of his students and finds that 11 attended the function. Thanks
- A golf pro shop is deciding whether to carry a new, more expensive line of golf balls that claim to travel further. To test the new balls, the pro shop manager asked the club’s golf pro to hit 100 of the top selling brand of balls and 100 of the new balls. The distance traveled by both the new and current balls was recorded. For this scenario, which of the following would be the proper set of hypotheses? a. H0: µD = 0 H1: µD > 0 b H0: µD = 0 H1: µD < 0 c. H0: µnew - µcurrent = 0 H1: µnew - µcurrent < 0 d. H0: µnew - µcurrent = 0 H1: µnew - µcurrent > 0 II. What is the dependent variable in this study?Write the null and alternative hypotheses in words and then symbols for each of the following situations.Since 2008, chain restaurants in California have been required to display calorie counts of each menu item. Prior to menus displaying calorie counts, the average calorie intake of diners at a restaurant was 1100 calories. After calorie counts started to be displayed on menus, a nutritionist collected data on the number of calories consumed at this restaurant from a random sample of diners. Do these data provide convincing evidence of a difference in the average calorie intake of diners at this restaurant? In symbols, the hypotheses are: __Ho: μ = 1100Ha: μ < 1100 __Ho: μ < 1100Ha: μ = 1100 __Ho: μ = 1100Ha: μ ≠ 1100 __Ho: μ = 1100Ha: μ = 1100The manufacturer of Lakas Papaya cleansing soap claimed that their product was effective in making the facial skin blemish-free of at least 93% of users who tested it for a period of 1 week. In a sample of 350 people who had problems with their facial skin, the soap provided blemish-free skin for 295 people. Which of the following represents the alternative hypothesis for this problem? A. Ha: p = 0.93B. Ha: p < 0.93C. Ha: p > 0.93D. H_a: p ≠ 0.93
- In the following situations, is the alternative hypothesis one-sided or two-sided? What are the hypotheses? At a small computer company, only 69% of the hard drives produced passed all their performance tests the first time. Management recently invested resources into the production system and now conducts a test to see if it helped. b) A company wants to know if the average click-through rates (in minutes) are longer than the 6.7 minutes that customers spent on their old website before making a purchase.For each of the following research questions, state the null and research hypotheses in words and in symbols; then determine the type of the hypothesis test. A national survey reported that children’s mean cholesterol level is 191 mg/dL. An investigator hypothesizes that cholesterol levels in children might be decreased by educating their parents on proper nutrition and exercise. A well-known pain medication is publicized to produce pain relief in 75% of patients within 30 minutes of taking the drug. A new pharmaceutical company claims that they have developed a new drug that produces pain relief in a larger proportion of people within 30 minutes.Construct the null and alternative hypotheses for the following claims. a. "The school's mean GPA differs from 2.50 GPA." b. "The school's mean GPA is less than 2.50 GPA."
