The mean weight of male aerobics instructors in a certain city is more than 182 Ibs. Express the null and alternative hypotheses in symbolic form for this claim. Use the following codes to enter the following symbols: 2 enter >= s enter < * enter !=
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A: We have to find correct hypothesis.
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- What is defination for p -valueEight White adults had been convicted of crimes of hate for their anti-Asian behaviors and were asked to participate in treatment as part of their probated court sentences. Part of the treatment package consisted of watching a movie designed to increase tolerance and appreciation of cultural diversity. A "Diversity Attitude Checklist" (DAC) was completed by each participant before and after watching the movie. Using the pre and post movie DAC scores below, test the researcher's hypothesis that the movie will result in an increase in tolerance and appreciation for cultural diversity attitude (raise DAC scores). High scores on the "Diversity Attitude Checklist" indicate more tolerance and appreciation. Participant A B C D E F G H Pre-Movie DAC After Movie DAC Score Score 28 36 25 25 27 26 29 31 25 28 21 22 27 33 25 29 Is this a one-tailed HA or a two-tailed HA?A manager of a certain cargo company reported that his company has delivered 8453 packages during the month of January. Based on this information he also claimed that his company would deliver 124,400 packages during the year. уear. Determine whether the manager's claim is an example of a descriptive statistic or an example of an inferential statistic.
- Assume that 900 births are randomly selected and 443 of the births are girls. Use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high.A certain affects virus 0.8% of the population. A test used to detect the virus in a person is positive 88% of the time if the person has the virus (true positive) and 13% of the time if the person does not have the virus (false postive). Fill out the remainder of the following table and use it to answer the two questions below. (enter answer with no commas, i.e. as 1000 not 1,000.) Infected Not Infected Total Positive Test [a] [b] [c] Negative Test [d] [e] [f] Total 800 99,200 100,000 i) Find the probability that a person has the virus given that they have tested positive. (Round your answer to the nearest tenth of a percent and do not include a percent sign.)[g]_______ % ii) Find the probability that a person does not have the virus given that they test negative. (Round your answer to the nearest tenth of a percent and do not include a percent sign.)[h]________ %Mr. Jones believes that the mean income of lawyers has changed and is no longer $65 thousand per year. Which is the correct set of hypotheses to test this belief? O Ho:µ 2 65,000; Ha: µ 65, 000 О Нор - 65, 000; На: и # 65, 000 О Нор 65, 000
- The mean age and median age of 5 people in a room is 40 years. A person whose age is 20 years leaves the room. a) If possible, determine the mean age of the remaining 4 people in the room. If it is not possible to find the mean age of the remaining 4 people, write "not possible" (without the quotes) as your answer. b) If possible, determine the median age of the remaining 4 people in the room. If it is not possible to find the median age of the remaining 4 people, write "not possible" (without the quotes) as your answer.AD (Alzheimer's disease) causes progressive cognitive impairment. A diagnostic blood test for AD was proposed. An evaluation of the blood text involved fifty known AD patients and forty control who did not have AD. Of those who had AD, forty eight tested positive on the blood test and two tested negative. Of those without AD, three tested positive on the blood test and thirty seven tested negative. g. What is the NPV? Use this in a sentence explaining to a person what their negative test results suggests.Update A certain company offers in-home cral HIV testing. According to their website, out of 4,998 persons who were unaware of their HIV status, 96 persons were HIV positive and 4,902 were HIV negative (as determine by an indeperdent lab test). For 4,901 out of the 4902 persons who were HIV negative, he company's test correctly predicted such a negative result, but incorrectly predicted a positive result for the one remaining person. Of the 96 persons were HIV positive, the company's test correctly predicted a positive result for 90 of them and a negative result for the others. These results can be summarized in the table below Pos Neg Total HIV 90 6 96 No HIV 4,901 4,902 Total 91 4,907 4,998 Find the estimated sensitivity of the company's test for the population that the sample of 4,998 represents. (Round to four decimal places as needed.)
- A test of abstract reasoning is given to a random sample of 10 students before and after completing a formal logic course. The results are shown below. Do the data provide enough evidence to show that the mean score after the course is greater than the mean score before the course? What's the difference between population means for the scores? score before 73, 77, 70, 77, 74, 67, 95, 83, 75, 84, 85 score after 79, 83, 75, 88, 84, 69, 95, 84, 91, 86 What is the value of the test statistic? Round to 4 decimal places if necessary.9. There are about 8 million people in the City of New York. A survey organization took a simple random sample of 2,500 persons and found that the average household income in the sample was $59,210 and the SD was $26,120. The organization estimates the average income in the entire city to be around $59,210, they put s give-or-take number of $522.40 on this estimate. Say whether each of the following statements is true or false, and explain. (a) An approximate 99.7%-confidence interval for the average household income in the city runs from $57.642.80 to $60,777.20 (b) If a statistician takes a simple random sample of 2,500 persons out of the 8 million people in the city, and goes 3 SEs either way from the average household income of the the 2,500 people in the sample, there is about a 99.7% chance that his interval will cover the average household income in the city. (c) About 99.7% of the people in the sample had incomes in the range $59, 210+ $78,360. (d) It is estimated that 99.7% of…To help plan the number of meals to be prepared in a college cafeteria, a survey was conducted, and the following data were obtained. 132 students ate breakfast.175 students ate lunch.270 students ate dinner.69 students ate breakfast and lunch.111 students ate breakfast and dinner.90 students ate lunch and dinner.53 students ate all three meals. How many students ate (a) At least one meal in the cafeteria?=__students(b) Exactly one meal in the cafeteria?=__students