Question 8 Consider the following data collected in a study concerning an individuals' health and income. What is the probability a randomly selected individual in the study has bad health or is low income? Bad Health Good health Total Low income 300 100 Middle income 200 100 High income 100 200 Total 1000 30% 70% 60% O 77.7%
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- A random sample of adults in the US was selected and the following eye colors were observed. Eye Color Brown Frequency 48 What is the proportion of people who have hazel eyes? 10 0.10 0.48 12 Blue 22 Green 10 Hazel 12 Other 8Question 24 What is the shape of the following distribution? Result: 0,00 of 1,00 Your answer: J-shaped Reverse J-shaped Right-skewed Left-skewedQuestion : The Epworth Sleepiness Scale (ESS) was designed to measure whether a person is getting enough sleep. The test asks such questions as how likely you are to doze off in a variety of situations, such as watching TV, or at a meeting, or even as a passenger in a car on a long ride. The test is designed to produce a mean score of 7.50. A random sample of college students was selected and the following scores were obtained: 6, 10, 4, 3, 8, 12, 5, 7, 9, 4, 10, 2, 7, 5, 4, 7, 8, 11, 3, 7. Could this sample be representative of a population whose mean is 7.50? Conduct the hypothesis testing (show all the six steps of hypothesis testing) using α = .05 and the two-tailed test. Give the probability statement after the statistical test is done. I need step by step solution to the above mentioned question please.
- Which characteristics appear to be statistically significant in explaining the variation in prices, that is, appear to have more of an impact that what we would expect from simply random chance?USING EXCEL (provide Excel screenshots) Thank you! Suppose a researcher is interested in carrying out a phase II clinical trial in order to assess the effectiveness of four different doses of an investigational new drug. Assume the following table represents the summary statistics revolving around the number of adverse events in the four fasting glucose among groups. Fasting Glucose Treatment Group 124 1 124 1 125 2 134 2 138 2 137 2 136 2 119 1 124 3 120 1 116 3 124 3 127 3 129 1 A) Calculate the MSW. B) Calculate the MSB.A researcher conducted a study on 241 participants to see which plant color they were most likely to select. Using the chart below, what is the probability that someone would choose a plant that wasn't green or red? Plant Color Green Pink Red 50 Frequency 20.74% 100 Purple 20 71
- Are birthdays "evenly distributed" throughout the year, or are they more common during some parts of the year than others? Owners of a children's toy store chain asked this question. Some data collected by the chain are summarized in the table below. The data were obtained from a random sample of 180 people. The birthdate of each person was recorded, and each of these dates was placed into one of four categories: winter (December 21-March 20), spring (March 21-June 20), summer (June 21-September 20), and fall (September 21-December 20). The numbers in the first row of the table are the frequencies observed in the sample for these season categories. The numbers in the second row are the expected frequencies under the assumption that birthdays are equally likely during each season of the year. The bottom row of numbers gives the following value for each of the season categories. (Each expert I have asked has gotten the critical value wrong so I added a picture of the correct formula to…The weekly chocolate milk consumption of 40 randomly selected children is represented in the following histogram. А. Weekly Chocolate Milk Consumption 3.25 3.0 2.75 2.5 2.25 2 1.75 1.5 1.5 1.5 1.25 1.25 1.0 1 0.75 E 0.75- 0.5 0.25 2.5 7.5 10.5 18.5 22.5 26.5 30.5 Glasses/week (i) Based on the above histogram, construct a grouped frequency table showing the group boundaries, frequency density, frequency, and class width. (ii) Calculate the following sample statistics: (a) Mean (b) Standard deviation (c) Mode and median (using the interpolation formula) (d) Pearson Coefficient of Skewness using the median value. Hence, comment on the shape of the distribution. (iii) Construct a 98% confidence interval estimate of the mean weekly chocolate milk consumption for the population. Assume that the population variance is 49. Frequency DensityIn a survey of 2500 adults 18 year old and older conducted in 2019 adults 18 years old and older, the following question was asked : Is your family income keeping pace with the cost of living ? The results of the survey follow : Falling Staying Don't Answer Increasing behind even know faster Respondents 900 1020 460 120 Determine the probability distribution associated with these data.
- Are birthdays "evenly distributed" throughout the year, or are they more common during some parts of the year than others? Owners of a children's toy store chain asked this question. Some data collected by the chain are summarized in the table below. The data were obtained from a random sample of 180 people. The birthdate of each person was recorded, and each of these dates was placed into one of four categories: winter (December 21-March 20), spring (March 21-June 20), summer (June 21-September 20), and fall (September 21-December 20). The numbers in the first row of the table are the frequencies observed in the sample for these season categories. The numbers in the second row are the expected frequencies under the assumption that birthdays are equally likely during each season of the year. The bottom row of numbers gives the following value for each of the season categories. (Each expert I have asked has gotten the critical value wrong so I added a picture of the correct formula to…The data below was obtained from a random survey of 459459 people. The participants were asked their political party and whether they approve, disapprove, or have no opinion of how the president is doing his job. The results of the survey are as follows: Democrat Republican Independent Total Approve 103 56 8 167 Disapprove 109 123 5 237 Undecided 27 28 5 55 Total 239 207 18 459 If a person if selected at random, what is the empirical probability that the the person approves of the job the president is doing or is an independent?Residents of certain regions were asked about their thoughts on national defense spending. The results are represented in the table below. Northeast Southeast Midwest West Increase defense spending 466 227 366 239 Keep spending the same 224 344 188 142 Decrease defense spending 409 359 128 173 What is the empirical probability that an individual from the West wants to decrease defense spending? Answers should be percentages correct to two decimal places.
