n a study, 28 adults with mild periodontal disease are assessed before and 6 months after implementation of a dental-education program intended to promote better oral hygiene. After 6 months, periodontal status improved in 15 patients, declined in 8, and remained the same in 5.
Q: A researcher was interested in whether there were differences in the level of activity in children…
A: According to the given information in this question you miss one option independent sample t test
Q: A small pilot study is run to compare a new drug for chronic pain to one that is currently…
A: Given data and calculation of Rank is shown below
Q: McAllister, et al. (2012) compared varsity football and hockey players with varsity athletes from…
A: Given that : McAllister, et. al (2012) compared varsity football and hockey players with varsity…
Q: In another study of the effect of violent, sexuall sion, the same researchers use a within-subject…
A:
Q: A study of the effects of color on reducing anxiety compared anxiety test scores of participants who…
A: According to the provided information, two individuals groups took the same test on different colors…
Q: Does St. John wort (an herb) have a siginifact effect in treating major depression? A study looked…
A: C.The placebo makes no difference in the subjects' depression
Q: In randomized, double-blind clinical trials of a new vaccine, children were randomly divided into…
A: The following information has been provided Sample size n1=746 Sample size n2=627 Favourable cases…
Q: In single-factor ANOVA, when the calculated value of the test statistics, F*, is greater than the…
A: We want to tell you which one is the correct choice.
Q: Select a significance level α and reject the null-hypothesis if the p-value is less than α. Explain,…
A: Correlation: The correlation coefficient explains the relationship between two quantitative…
Q: postmenopausal women: (1) women eating a standard American diet (STD), (2) women eating a…
A: ANOVA or Analysis of Variances is one of the most important fields in Statistic. The reason for this…
Q: 11. The Airline Passenger Association studied the relationship between the number of passengers on a…
A: Correlation coefficient: Correlation coefficient measures the strength and direction of linear…
Q: Suppose that 90 of 100 patients who enter hospital A with a particular ailment recover, while 160 of…
A: Given data: Number of patients who enter hospital A, n1=100 Out of 100, number of patients who enter…
Q: Researchers compared protein intake among three groups of postmenopausal women: (1) women eating a…
A: Hello. Since your question has multiple parts, we will solve first question for you. If you want…
Q: A study oT seat belt users and honusers yielded the randomly selected sample data summarized in the…
A: Correct answer: b) None of the other answers in necessary type. Number of cigarettes smoked per…
Q: What can conclude about the null hypothesis from this dataset of weight gain in mice grouped by…
A: The given data can be written in the form of a two-way table as follows Diet Stress A B C…
Q: test, two groups had the following summary statistics. Group A: median = 145 beats/min,…
A: We have given summary of statistics of heart rates of cardiac patients in a two-minute stress test…
Q: An analysis of variances produces dftotal = 33 and dfwithin = 30. For this analysis, how many…
A: Given: Degrees of freedom total =33 and degrees of freedom within=30 Then to find nonof treatment…
Q: An online clothing retailer is testing a new e-mail campaign by sending one version of the e-mail…
A: Note: Since you have posted questions with multiple subparts we will solve the first three questions…
Q: Although tea is the world's most widely consumed beverage after water, little is known about its…
A: Since the multiple comparison tests are not available in excel and manual calculations are a little…
Q: In a study of cell phone use and brain hemispheric dominance, an internet survey was e-mailed to…
A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a…
Q: McAllister et al. (2012) compared varsity football and hockey players with varsity athletes from…
A: Given: Noncontact Athletes Contact Athletes 10 7 8 4 7 9 9 3 13 7 7 6 6 10 12 2
Q: Which of the following statements, if any, are reasonable conclusions?
A:
Q: In a study designed to examine the effectiveness of a social skills program for children, 20…
A: Given information: The descriptive statistics of social skills of participants I each of the Social…
Q: The following cross-table is obtained in a study that examines the relationship between the…
A: The following cross-table is given: Theoretical Factual competence Self employed competence…
Q: A) Assuming a two-tailed test, state the null hypothesis in a sentence that includes the two…
A: A) There is a popular belief that herbal remedies such as Ginkgo biloba and Ginseng may improve…
Q: In a study of the effectiveness of a fabric device that acts like a support stocking for a weak or…
A:
Q: A researcher was interested in whether there were differences in the level of activity in children…
A: Correct Option: C. Independent sample t-test
Q: In a study of the effectiveness of a fabric device that acts like a support stocking for a weak or…
A:
Q: 4. A clinical trial is conducted comparing a new pain reliever for arthritis to a placebo.…
A: Solution: The data of pain relief is given for participants who received a new medication or a…
Q: In a clinical trial, 19 out of 878 patients taking a prescription drug daily complained of flulike…
A: Solution: Given information: n= 878 Sample size x = 19 success p^=xn=19878= 0.02164 Sample…
Q: In randomized, double-blind clinical trials of a new vaccine, children were randomly divided into…
A: It is given that the sample size of group 1 is 361 and the number of side effect subjects is 111.The…
Q: A newspaper published an article about a study in which researchers subjected laboratory gloves to…
A: For the given data Perform z test for two proportion test
Q: In a study, 28 adults with mild periodontal disease are assessed before and 6 months after…
A: Let X denotes the observations before implementation of a dental-education program Y denotes the…
Q: 2. Per an December 23, 2014 www.huffingtonpost.com article entitled Children Who Eat More Fast Food…
A: The study "Children who eat more fast food show less academic improvement" was conducted by Kelly M.…
Q: Researchers compared protein intake among three groups of postmenopausal women: (1) women eating a…
A: Hi! Thank you for posting the question. Since you have posted multiple questions, we are answering…
Q: An analysis of variances produces dftotal = 16 and dfwithin = 14. For this analysis, how many…
A:
Q: Researchers studying the link between prenatal vitamin use and autism surveyed the mothers of a…
A: Given data: Autism Typical Development Total No Vitamin 111 70 181 Vitamin 143 159 302…
Q: In one study of smokers who tried to quit smoking with nicotine patch therapy, 35 were smoking one…
A: Denote p as the true population proportion of smokers who try to quit with nicotine patch therapy,…
Q: interested in knowing if a walking plus strength training exercise program results in a…
A: There are three groups walking plus strength training, walking only, or strength training only is…
Q: In randomized, double-blind clinical trials of a new vaccine, children were randomly divided into…
A:
Q: In a study of 90 patients on renal dialysis, Farhad Atassi (A-7) assessed oral home care practices.…
A:
Q: In a case-control study, 317 patients suffering from endometrial cancer were matched individually…
A: Since you have asked multiple question, we will solve the first question for you. If youwant any…
Q: Although there is a popular belief that herbal remedies such as Ginkgo biloba and Ginseng may…
A: a). The null hypothesis in a sentence is: Herbal remedies will not change learning and memory in…
Q: In a study, 28 adults with mild periodontal disease are assessed before and 6 months after…
A: Let X denotes the observations before implementation of a dental education program and Y denotes the…
Q: measured
A: Given: Exercise group N Mean Std. Dev Weight Training 20 49.7 10.2 Aerobic…
Q: a study of the effects of color on easing anxiety cpmpared anxiety test scores of prticipants who…
A: Note:In question values of scores are given for green paper only. We have considered the second set…
Q: A criminologist was interested in whether there was any disparity in sentencing. She selected at…
A:
Q: A sample of 12 men was used in a study to test the effects of a relaxant on the time required to…
A: Here we use Wilcoxon signed rank test. a. The null and alternative hypothesis is, H0:Medin time…
In a study, 28 adults with mild periodontal disease are assessed before and 6 months after implementation of a dental-education program intended to promote better oral hygiene. After 6 months, periodontal status improved in 15 patients, declined in 8, and remained the same in 5.
9.1 Assess the impact of the program statistically (use a two-sided test).
Trending now
This is a popular solution!
Step by step
Solved in 4 steps
- In a study, 28 adults with mild periodontal disease are assessed before and 6 months after implementation of a dental-education program intended to promote better oral hygiene. After 6 months, periodontal status improved in 15 patients, declined in 8, and remained the same in 5. 9.1 Assess the impact of the program statistically (use a two-sided test). Suppose patients are graded on the degree of change in periodontal status on a 7-point scale, with +3 indicating the greatest improvement, 0 indicating no change, and −3 indicating the greatest decline. The data are given in Table 9.9. 9.2 What nonparametric test can be used to determine whether a significant change in periodontal status has occurred over time? 9.3 Implement the procedure in Problem 9.2 and report a p-value.In a study, 28 adults with mild periodontal disease are assessed before and 6 months after implementation of a dental-education program intended to promote better oral hygiene. After 6 months, periodontal status improved in15 patients, declined in 8, and remained the same in 5. A) Assess the impact of the program statistically (use a two-sided test). Suppose patients are graded on the degree of change in periodontal status on a 7-point scale, with +3 indicating the greatest improvement, 0 indicating no change, and −3 indicating the greatest decline. The data are given in Table 9.9.In a study to determine if using low-intensity laser therapy reduces pain for orthodontic patients who are fitted with new braces, patients were randomly assigned to either a control group (who did not receive laser treatment) or an experimental group who did receive laser treatment.† The researchers found that the mean pain rating was lower for those in the laser treatment group than for those in the control group both two days and six days after receiving braces. The researchers used these data to determine if there was evidence to support the claim that the mean pain rating is lower for patients who receive the laser treatment. Answer the four key questions. Q, Question Type: Estimation or hypothesis testing? estimationhypothesis testing S, Study Type: Sample data or experiment data? sample dataexperiment data T, Type of Data: One variable or two? Categorical or numerical? one categorical variableone numerical variable two categorical variablestwo numerical variables…
- Does St. John wort (an herb) have a siginifact effect in treating major depression? A study looked at 340 adult outpatients suffering as measured by their HAM-Dscore, randomly assiging each subject to either a placebo, St.John's wort, or a second active treatment for comparison. The study found the diiference in treating major depression as measured by improvement in HAM-D scores between St.John's wort and the placebo was not statistically significant This means that: A. a difference this big could easily occur just by chance even if St. John's wort does not better than the placebo B. We cannot make a 95 percent confidence statement C.The placebo makes no difference in the subjects' depression D. The study was badly designedAre sexually active teenagers any better informed about AIDS and other potential health problems related to sex? A 15-item test of general knowledge about sex and health was administered to random samples of teens who are sexually inactive, teens who are sexually active but only with a single partner ("going steady"), and teens who are sexually active with more than one partner. Is there any significant difference in the test scores?In a study of cell phone use and brain hemispheric dominance, an internet survey was e-mailed to 5000 subjects randomly selected from an online group involved with ears. 717 surveys were returned. Use a 0.01 significance level to test the claim that the return rate is less than 15%.
- In a controlled laboratory experiment, scientists at the University of Minnesota discovered that 25% of a certain strain of rats subjected to a 20% coffee bean diet and then force-fed a powerful cancer-causing chemical later developed cancerous tumors. Would we have reason to believe that the proportion of rats developing tumors when subjected to this diet has increased if the experiment were repeated and 16 of 48 rats developed tumors? Use a 0.05 level of significance.Mood variation is related to photoperiod in some people, and the likelihood of depression increases in the winter months. As a result, people often assume that suicide rates increase in winter. A study in Finland (Valtonen et al. 2006) divided the year 1997 into equal halves and compared the number of suicides in “winter” (24 September to 19 March) and “summer” (remainder of year). Out of a total of 1636 suicides, 766 were in winter and 870 were in the summer. Based on these data, estimate the proportion of suicides that occurred in winter, assuming that the suicides were independent. Are the data compatible with a greater suicide rate in winter than summer, based on a 95% confidence interval?In a clinical study of an allergy drug 98 of the 202 subjects reported experiencing significant relief from their symptoms. At the 0.01 significance level, test the claim that at least half of those using the drug experience relief.