Use the information below to construct a 2x2 table and answer the following question: Risk Factor Has Outcome 19 53 Exposed Not Exposed What is the population attributable risk percentage? a. 47.5% b.63.1% c. 12.5% d.09.2% Outcome Does Not Have Outcome 139 789
Q: The table below gives concordance and discordance percentages with regard to different ty pairs…
A: According to the given five cases(Monozygotic twins, Dizygotic twins, Siblings, parent/ offspring,…
Q: The odds ratio is best used as a measure of effect size for frequency or nominal data. True False
A: The objective is to state whether the following statement is true or false.
Q: At Target one morning, I recorded what color eyes people I walked by had, along with the color of…
A: Independent events: If two events A and B are said to be independent then PA∩B=PAPB. The probability…
Q: An occupational therapist (OT) is comparing two different treatments to see which is more effective…
A: we have two groups one consisting of participants A, B, C, D and the other treatment is on…
Q: A single sample t-test should be conducted to see if there is a difference between which of the…
A: A single sample t-test A single sample t-test is used to see there is a difference between sample…
Q: The distribution of cholesterol levels in teenage boys is approximately normal with mean 170 and…
A: Obtain the expected number of teenager boys to have cholesterol levels between 170 and 225. The…
Q: A Heartland Monitor poll taken in December 2016 obtained responses from 990 adult Americans to the…
A: As per the guidelines we are allowed to solve maximum of 3 subparts If you need help with another…
Q: Use the following information to complete parts (a) through (e) below. A researcher wanted to…
A: The given information can be represented as follows. Treatment B…
Q: The Scenario The cost of a tank of gas at two different gas stations in one month were collected…
A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: The following two-by-two table was created from the data. TROUBLE STAYING ASLEEP [outcome]…
A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: What is your conclusion regarding the effects of the sexes on the life span of fruit flies?
A: Test is that whether there is significant effect of the sex on the life span of fruit flies. Level…
Q: The following data represent the means for each treatment condition in a two factor experiment. Note…
A: Given The data is as follows: B1 B2 A1 10 25 A2 40 ?
Q: economist wonders in corporate productivity in some countries is more volache than in other…
A: FranceGermany4.92.65.13.63.13.63.64.92.75.53.55.52.854.45.45.73.23.43.54.13.76.82.62.92.83.237.236.5…
Q: A magazine article reported on Springfield School District's magnet school programs. The article…
A:
Q: Variability that is due to the different treatments that the different groups receive is called:…
A: Variability between the treatments in ANOVA.
Q: cant interaction. Use a = .05. Factor A is method of loading and unloading; Factor B is the type of…
A: It is required to complete the ANOVA table, find the p-value for Factor A, and test for significant…
Q: Here are the choices:One way ANOVA one sample t-testDependent t-test 2-factor ANOVA Independent…
A: ANOVA: Suppose the hypothesis test is performed to determine a significant difference between more…
Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…
A: Given that, Sample size n=54 Sample proportion of automobile driver fatalities that involved an…
Q: please help: A case-control study was conducted to assess the association between exposure to…
A: Given that: Total number of cases in a sample = 55 Total number of controls = 2820 Number of exposed…
Q: measure of a company's productivity is annual percentage yield based on total company assets. A…
A: Step 1: The sample of the first sample: By using EXCEL, 1.enter the data 2.Enter the formula…
Q: Is there a difference in profit in the first quarter compared to the second quarter for investor’s…
A: The data represents the values of profit in the first quarter and second quarter for each of the 9…
Q: What is the computed value of the test statistic? A. 4.381 B. -4.381 C. -4.898 D. 4.898
A:
Q: Does 10K running time decrease when the runner listens to music? Nine runners were timed as they ran…
A:
Q: a. For which data set, Video 1 or Video 2, is it appropriate to use the Empirical Rule? Explain why.…
A: It is given that For video 1, mean = 52.05, SD = 12.54 For video 2, mean = 44.25, SD = 8.16 Note :…
Q: A researcher wants to study whether there is a relationship between type of music (pop or country)…
A: We have to find correct option.
Q: The overnight shipping business has skyrocketed in the last ten years. The single greatest predictor…
A: Total Number of customers =700 Event =A= >5 permonth Event =B=medium
Q: Occupation Farmers, foresters, and fishermen Miners and quaarrymen Gas, coke, and chemical makers…
A: The given data is Smoke Index Lung Cancer Index 77 84 137 116 117 123 94 128 116 155…
Q: A local bank wants to study waiting times of customers. A sample of four customers is selected on…
A: Given information, The local bank plans to study waiting times of customer. The sample of four…
Q: Does it take more time for seeds to germinate if they are near rock music that is continuously…
A: According to the given information in this question There are more than three subparts according to…
Q: Suppose a random sample of 1156 adults from your town are surveyed. The table below shows the…
A: Outcome Observed Frequency Blue Collar 277 White Collar 381 Pink Collar 417 Unemployed 81…
Q: If 2% of the components produced by a machine are defective. What is the variance of the number of…
A: According to the question, Number of components, n=300 Probability to be defective p =0.02
Q: 18. The investigation has also determined the following relative risk estimates pertaining to eating…
A: Given data is Effect of drinking without regard to eating pizza effect of drinking among those…
Q: In a case-control study the association was examined between smoking and risk of Parkinson's…
A: In any categorical data analysis, the odds ratio, risk of increase or decrease always comes into…
Q: WAKE UP DURING THE NIGHT GENDER Yes No TOTAL Female 125 25 150 Male 91 30 121 TOTAL…
A: The probability for an event (i.e., the event of "waking up during the night with respect to gender"…
Q: Four scenarios of statistical studies are given below. Decide which study uses a population…
A:
Q: 3. Can SAT scores predict college performance? Let x be a variable that represents SAT score of a…
A: Given data is x 1232 1070 1086 1287 1130 1048 1121 1095 1135 1208 1333 1160 1186 1243 1261 y…
Q: 10. Gasoline prices. The Table 7 shows the gasoline prices (in dollars) for a sample of service…
A: State the hypotheses.
Q: 40. What is the Dependent Variable of the study? a. Number of Burgers b. Fast Food Group C. Calories…
A: Basics: Dependent Variable: A dependent variable is a variable dependent on the value of another…
Q: 1. A recent report on elementary schools in Tarrant county claimed that 13% of elementary students…
A: from the given information, given that p=0.13n=80x=17α=0.01
Step by step
Solved in 2 steps
- 3. Can SAT scores predict college performance? Let x be a variable that represents SAT score of a computer science major, and let y be a variable that represents a student’s GPA upon graduation. A random sample of n =15 computer science majors provided their SAT scores and GPAs: x 1232 1070 1086 1287 1130 1048 1121 1095 1135 1208 1333 1160 1186 1243 1261 y 3.52 2.91 2.4 3.47 3.47 2.37 2.4 2.24 3.02 3.32 3.59 2.54 3.19 3.71 3.58 The scatter diagram for the SAT score and GPA is given below: (a) Find the sample correlation coefficient r. Truncate to two decimal places. What does the value tell you about the data? (b) Find the equation of the least squares line . Truncate to four decimal places. What does the slope mean? (c) Find the value of the coefficient of determination . Truncate to two decimal places. What does this number mean? (d) What is the predicted GPA if a computer science major got a…In the population of students at Milpitas High School, the proportion who are in the marching band is 0.10. In a random sample of 100 students from this population, the proportion who are in the marching band is 0.04. We would call the value 0.04 a A. statistic. B. parameter. C. z-score. D. P-value. E. significance level.45. Which one of the following is not a common level of significance set in statistical analysis? a. 90% b. 50% c. 95% d. 99%
- UBS Wealth Management UK periodically ask their customers to evaluate their financial consultants and services. The higher the customer rating, the better the perceived service. The maximum rating is 7. Independent samples of two financial consultants are given below. Consultant A has 10 years' experience, Consultant B has 1 years' experience. Use α = 0.05 and test to see whether the consultant with more experience has the higher population mean service rating. Consultant A Consultant B N1 = 16 N2 = 10 Mean1 = 6.82 Mean2 = 6.25 S1= 0.64 S2 = 0.75 State the null and alternative hypothesis, Compute the value of the test statistic. What is the p-value? What is your conclusion?An economist wonders if corporate productivity in some countries is more volatile than in other countries. One measure of a company's productivity is annual percentage yield based on total company assets.A random sample of leading companies in France gave the following percentage yields based on assets. 4.6 5.4 3.4 3.1 2.4 3.5 2.8 4.4 5.7 3.4 4.1 6.8 2.9 3.2 7.2 6.5 5.0 3.3 2.8 2.5 4.5 Use a calculator to verify that the sample variance is s2 ≈ 2.109 for this sample of French companies.Another random sample of leading companies in Germany gave the following percentage yields based on assets. 3.3 3.2 3.2 4.1 5.4 5.5 5.0 5.4 3.2 3.5 3.7 2.6 2.8 3.0 3.0 2.2 4.7 3.2 Use a calculator to verify that s2 ≈ 1.077 for this sample of German companies.Test the claim that there is a difference (either way) in the population variance of percentage yields for leading companies in France and Germany. Use a 5% level of significance. How could your test conclusion relate to the…On occasion, medical studies need to model the proportion of the population that has a disease and compare that to observed frequencies of the disease actually occurring. Suppose the end-stage renal failure in south-west Wales was collected for different age groups. Do the data in the table show that the observed frequencies are in agreement with proportion of people in each age group? Test at the 1% level. Renal Failure Frequencies Age group 16-29 30-44 45-59 60-74 75+ Total Observed Frequencies 125 152 134 124 48 583 Expected Proportion 0.23 0.25 0.22 0.21 0.09 State the hypotheses.H0: The observed frequencies in agreement with proportion of people in each age group.Ha: The observed frequencies in agreement with proportion of people in each age group. Calculate the χ2 test statistic. Round expected values to two decimal places. Round χ2 to 3 decimal places.χ2 = Calculate the p-value. Round to 3 decimal places.p-value = State your decision.Since p-value α,…
- A source table has the following information: Three treatment conditions with a sample of n =7 participants in each treatment. You know SS(BW) = 20 and MS(WI) = 2. What is the missing value for MS(BW)? Answer choices: 40, 10, 2, 5 You have an ANOVA source table with the following information: Three treatment groups with a sample of n = 10 participants in each treatment. You also know the SS(BW) =20 and F = 5.00. What is the missing value for SS(Total)? Answer choices: 74, 54, 30, 22 For an experiment involving 2 levels of factor A and 3 levels of factor B with a sample of n = 5 in each treatment condition, what is the value for df(WI)? Answer choices: 30, 29, 24, 201. A researcher was interested in understanding reproductive health among youth. She randomly selected a group of young persons and administered a questionnaire to collect information. Table 1 provides data on 10 respondents with their responses to selected questions. Respondent # How much of Gender a risk would Number of persons had sex with in the past months Frequency of Alcohol usage in the past 12 do you think you personally have of getting other STDS? 12 months (Risk of HIV) Moderate Risk Female No risk at all Little risk 1 Never Male Almost everyday Male Never Great risk Male Female 4 About once per week Once per month Almost everyday 1-3 drinks per month Moderate risk 6. No risk at all Female 1 7 Great Risk Male 3 8. No risk at all Female Never Little Risk No risk at all Female Male Almost every day About once per 9 10 month a. Refer to Table 1: Indicate the most appropriate measure of central tendency for each variable listed and give a reason for your choice. b. Suppose you…3. Can SAT scores predict college performance? Let x be a variable that represents SAT score of a computer science major, and let y be a variable that represents a student’s GPA upon graduation. A random sample of n =15 computer science majors provided their SAT scores and GPAs: x 1232 1070 1086 1287 1130 1048 1121 1095 1135 1208 1333 1160 1186 1243 1261 y 3.52 2.91 2.4 3.47 3.47 2.37 2.4 2.24 3.02 3.32 3.59 2.54 3.19 3.71 3.58 The scatter diagram for the SAT score and GPA is given below: (a) Find the sample correlation coefficient r. Truncate to two decimal places. What does the value tell you about the data? (b) Find the equation of the least squares line . Truncate to four decimal places. What does the slope mean? (c) Find the value of the coefficient of determination . Truncate to two decimal places. What does this number mean? (d) What is the predicted GPA if a computer science major got a…
- 4. time to try out multiple predictor variables. take a look at the data shown here, where the outcome is becoming a great chef. we suspect that variables such as number of years of experience cooking, level of formal culinary education, and number of different positions (sous chef, pasta station, etc.) all contribute to rankings or scores on the great chef test. a. which are the best predictors of a chef’s score? b. what score can you expect from a person with 12 years of experience and a level 2 education who has held five positions?An economist wonders if corporate productivity in some countries is more volatile than in other countries. One measure of a company's productivity is annual percentage yield based on total company assets.A random sample of leading companies in France gave the following percentage yields based on assets. 4.3 5.1 3.8 3.6 2.2 3.5 2.8 4.4 5.7 3.4 4.1 6.8 2.9 3.2 7.2 6.5 5.0 3.3 2.8 2.5 4.5 Use a calculator to verify that the sample variance is s2 ≈ 2.042 for this sample of French companies.Another random sample of leading companies in Germany gave the following percentage yields based on assets. 3.3 3.9 3.7 4.6 5.1 5.5 5.0 5.4 3.2 3.5 3.7 2.6 2.8 3.0 3.0 2.2 4.7 3.2 Use a calculator to verify that s2 ≈ 1.024 for this sample of German companies.Test the claim that there is a difference (either way) in the population variance of percentage yields for leading companies in France and Germany. Use a 5% level of significance. How could your test conclusion relate to the…An analysis of variance produces SSbetween = 75 and MSbetween = 15. In this analysis, how many treatment conditions are being compared? Select one: a. 3 b. 4 c. 5 d. 6
