The average weekly first - take passer in a specific driver's testing site is 700. We want to test whether more than 700 pass on try. Determine the appropriate symbol for the null and alternative nypothesis HoiH_700 Hail_700 = ; > 2; > <; >
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- Let's assume that there are 500 people in a population. The researcher has access to all 500 participants, and sends a questionnaire that is accessed by a hyperlink. Of the 500 possible subjects, 485 complete it. Does this mean that the results generated from this study will be highly-accurate? What might cause the study to be unreliable?A study showed that 64% of supermarket shoppers believe supermarket brands to be as good as national name brands. To investigate whether this result applies to its own product, the manufacturer of a national name-brand ketchup asked a sample of shoppers whether they believed that supermarket ketchup was as good as the national brand ketchup. Only BA fleet of 100 taxis is divided into two groups of 50 cars each to see whether premium gasoline reduces maintenance costs. Premium unleaded fuel is used in group A, while regular unleaded fuel is used in group B. The total maintenance cost for each vehicle during a one-year period is recorded. Premium fuel will be used if it is shown to reduce maintenance costs.
- The Higher Education Research Institute at UCLA collected data from 203970 incoming first-time, full-time freshmen from 250 four-year colleges and universities in the U.S. 70.5% of those students replied that, yes, they believe that same-sex couples should have the right to legal marital status. Suppose that you randomly pick 6 first-time, full-time freshmen from the survey. You are interested in the number of these 6 that believes that same sex-couples should have the right to legal marital status. Idenitify the parameter n for the binomial experiment. Identify the parameter p for the binomial experiment. Round your answer to 3 decimal places. Find the probability that exactly 2 of the 6 reply that, yes, they believe that same-sex couples should have the right to legal marital status. Round your answer to 4 decimal places.Explain the Tukey HSD results in the attached table .Create a multiplicative Cayley table for Q
- Write a short note on Tukey’s HSD test.Assume that in your liguistics class you have earned the test scores 83, 74, 54, and 64; and only one test remains. If you need a mean score of 70 to earn a "C", then what minimum score must you obtain on the last test?The Canadian Federation of Independent Business (CFIB) sent an online survey to 3000 small businesses in Canada asking many questions as to how they were affected by the Covid-19 sanitary restrictions over the last two years. Of the 229 businesses that responded to the CFIB survey, 37.1 % reported that they were negatively affected. An equivalent provincial association in Quebec (AGAP) had just conducted a similar survey among its 250 members. Among the 24 AGAP members who responded to the same question, 7 of them said they were negatively affected. Do you have any reason to doubt that, statistically, the AGAP respondents can be considered part of the same population of CFIB respondents? Provide a statistical argument using a cut-off point (red flag) of 5%.
- A researcher is interested in whether people will show different amounts of cognitive dissonance when viewing images of animals in distress vs. images of humans in distress. The researcher collects data from N = 12 people and randomly assigns six people to an Animal Distress condition and six different people to a Human Distress condition. Participants were shown 20 images superimposed onto one of 4 color backgrounds (i.e., red, yellow, green, and blue) and were asked to report the color behind each image as quickly as possible using keys on a keyboard. Participants in the Animal Distress condition were shown 20 images of animals in distress and participants in the Human Distress condition were shown 20 images of humans in distress. Cognitive dissonance was measured using the number of errors made in identifying background colors. The data were as follows: Animal Distress: 8, 6, 7, 8, 5, 9 Human Distress: 3, 2, 4, 1, 2, 2Does the check digit of a UPC code detect all single errors? Prove your answer or find a counterexample.Of the 400 students chosen randomly to investigate the internet usage habits of students in a school, 0.62 stated that they follow the newspapers on the internet. Accordingly, test the claim that students who follow the newspapers on the internet are more than 60% at a 1% meaning level.