The following table was presented in an article summarizing a study tocompare a new drug to a standard drug and to a placebo.New Drug45.2 (4.8)Standard Drug44.9 (5.1)55%63.8 (16.9)65%Characteristic"Placebo42.8 (4.3)57%58.2 (13.6)82%Age, years0.574651%59.5 (14.3)87%% Female0.06350.46350.03520.1261Annual Income, $000s% with InsuranceDiscase StageStage IStage I|Stage III*Table entries and Mean (SD) or %35%18%33%37%51%42%47%23%20%Are there any statistically significant differences in the characteristicsshown among the treatments? Justify your answer

Answered: Image /qna-images/answer/11039a6c-fce8-406e-b449-fd3ddca2beec.jpg

Answered: The following table was presented in an…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A researcher is interested in seeing what effect a particular type of drug has on an intelligence test, depending on the time of day that the pill is administered. The researcher computes a two-way ANOVA and plots the resulting cell means on the graph at right. Assuming that any obvious differences are statistically significant Is there a main effect for type of pill? Is there a main effect for time of day? Is there an interaction? 4. Describe the findings of the study in everyday terms
Which of these experimental designs has the most statistical power (is more likely to show a true difference between 2 treatment conditions)? A. Between-Subjects B. Descriptive Study C. Correlational Study D. Within-Subjects
The respiratory disturbance index (RDI), which is the number of apneic and hypopneic episodes per hour of sleep, was used as a measure of severity of sleep apnea. An RDI of 5 or more indicates sleep-related breathing disturbances. The RDIs for the females and males samples in a study in US are as follows. Female 0.1 0.5 0.3 2.3 2.0 1.4 0.0 Male 2.6 19.3 1.4 1.0 0.0 39.2 4.1 0.0 2.1 1.1 5.6 5.0 7.0 2.3 4.3 7.5 16.5 7.8 3.3 8.9 7.3 At the 1% significance level, do the data provide sufficient evidence to conclude that the female patients are less suffer than male from the apnea disease?
The following table displays descriptive statistics on the participants involved in a clinical trial that evaluates a new compound designed to improve wound healing in trauma patients. The new compound is compared against a placebo. Are any of the characteristics significantly different between groups? Characteristic New Compound Placebo p-value Mean age (years) 45.2 43.1 0.7564 Men (%) 45% 58% 0.215 Mean educational level (years) 12.1 13.2 0.6898 Mean annual income $36,560 $37,470 0.3546 Mean body mass index (BMI) 24.7 25.1 0.0051 Group of answer choices Mean age and Mean educational level Mean annual income Mean body mass index Mean body mass index and Mean age
A software company is interested in improving customer satisfaction rate from the 60% currently claimed. The company sponsored a survey of 148 customers and found that 95 customers were satisfied. What is the test statistic z?
Texting while driving: The accident rate for students who didn’t text while using a driving simulator was 7%. In a driver distraction study of 1,876 randomly selected students, the accident rate for students who texted while driving was higher than 7%. This difference was statistically significant at the 0.05 level. Which of the following best describes how we should interpret these results? Because of the large size of the sample, these results are strong evidence that texting accounts for a much larger proportion of accidents in the population of student drivers. With a large sample, statistically significant results suggest a large increase in the accident rate for the texting group over the control group. With a large sample, statistically significant results may actually be only a small improvement over the control group (depending on the size of the increase in percentages). Regardless of the sample size, a statistically significant result means there is a meaningful…
According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft, 23% of all complaints in the U.S. in 2007 were for identity theft. In that year, Alaska had 321 complaints of identity theft out of 1,432 consumers ("Consumer fraud and," 2008). Does this data provide enough evidence to show that Alaska had a different proportion of identity theft than 23%? Test at 5% level.
What is the correlation between hours of weekly exercise and reported levels of happiness among adults aged 30-50 in a sample of 500 individuals, while controlling for factors such as income, marital status, and education?
Tourism is extremely important to the economy of Florida. Hotel occupancy is an often-reported measure of visitor volume and visitor activity (Orlando Sentinel, May 19, 2018). Hotel occupancy data for February in two consecutive years are as follows. Current Year Previous Year Occupied Rooms 1,360 1,386 Total Rooms 1,700 1,800 a. Formulate the hypothesis test that can be used to determine whether there has been an increase in the proportion of rooms occupied over the one-year period. Let pi = population proportion of rooms occupied for current year Pa= population proportion of rooms occupied for previous year Ho : Pi - Pa H.: Pi - P2 Select your answer Select your answer b. What is the estimated proportion of hotel rooms occupied each year (to 2 decimals)? Current year Previous Year c. Conduct a hypothesis test. What is the p-value (to 4 decimals)? Use Table 1 from Appendix B. p-value - Using a 0.05 level of significance, what is your conclusion? We Select your answer- vthat there has…
Tourism is extremely important to the economy of Florida. Hotel occupancy is an often-reported measure of visitor volume and visitor activity (Orlando Sentinel, May 19, 2018). Hotel occupancy data for February in two consecutive years are as follows. Current Year 1,394 1,700 Occupied Rooms Total Rooms a. Formulate the hypothesis test that can be used to determine whether there has been an increase in the proportion of rooms occupied over the one-year period. Let p₁ = population proportion of rooms occupied for current year P2 = population proportion of rooms occupied for previous year 0.82 Previous Year 1,404 1,800 Ho: P1 P2 less than or equal to 0 Ha P₁ P2 greater than 0 b. What is the estimated proportion of hotel rooms occupied each year (to 2 decimals)? Current year Previous Year c. Conduct a hypothesis test. What is the p-value (to 4 decimals)? Use Table 1 from Appendix B. 0.78
A software company is interested in improving customer satisfaction rate from the 65% currently claimed. The company sponsored a survey of 248 customers and found that 170 customers were satisfied. What is the test statistic z?
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