Which statistical methods is appropriate for this research question?We want to determine if year in high school (freshman, sophomore, junior, senior) is significantlyassociated with use of vaping products in the past week (yes or no).Chi-Square TestLinear RegressionIndependent Two-Sample t-TestANOVA Which pair of statistical methods are most appropriate for this research question?We want to study the relationship between individuals' annual household income (in dollars) andnumber of dental caries (also known as cavities, or teeth with decay), ranging from 0 to 32.Chi-Square Test & Mood's Median TestANOVA & Tukey's HSD TestCorrelation Analysis & Chi-Square TestCorrelation Analysis & Linear Regression

(1) We have given that, We want to determine if the year in high school (freshman, sophomore,…

Answered: Which statistical methods is…

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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Model N Mean Median Tri Mean Std Dev SE Mean Hyundai 23 109 135 107.64 134 Toyota 27 165 124 143.65 9.5 You are required to test at the 5% level of significance the hypothesis that the average monthly earnings on Hyundai Vehicles is equal to $110,000 versus the alternative that it is different from $110,000. Give the null and alternate hypothesis, citical value, value of the test statistic, the decision rule, decision based on the evidence and your conclusion.
O E QUESTION 37 When conducting a one-way ANOVA, the compared to the within-treatment variability, the the between-treatment variability is when the value of F will be tend to be. smaller, larger smaller, smaller larger, larger smaller, more random larger, more random a. b. C. d. e. OA OB . OD QUESTION 38
linear refression
Statistics students in Oxnard College sampled 11 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data is shown below, Number of Pages (xx) Cost(yy) 942 59.1 453 24.65 789 41.45 473 34.65 302 25.1 567 23.35 482 32.1 511 26.55 285 28.25 529 35.45 477 19.85 Click to Copy-and-Paste DataA student calculates a linear modelyy = xx + . (Please show your answers to two decimal places)Use the model above to estimate the cost when the number of pages is 736Cost = $ (Please show your answer to 2 decimal places.)
CHOOSE ALL THAT APPLY: Which of the following are assumptions of ANOVA? Random sample Independent variable(s) are normally distributed Dependent variable is continuous Dependent variable is discrete Treatment variances are similar Treatment means are similar Dependent variables are normally distributed
pare percentage differences between 2 or more categories of an independent variable), the following statistical test should be used: a. Simple linear regression b. Pearson correlation coefficient c. T test d. Chi-square test
Which is NOT an example of statistical bias? Response Bias Observer Effect Recall Bias Placebo Effect
What is the test statistic?(round to two decimal places) What is the pvalue?(round to three decimal places) (Reject or don’t reject) the null hypothesis ?
Which best illustrates the distinction between statistical significance and practical importance? Multiple Choice "This year, 360 of 440 statistics students at Oxnard Technical College rented their textbooks, compared with 110 of 330 students last year. This is a significant increase." "Our new manufacturing technique has increased the life of the 80 GB USB AsimoDrive external hard disk significantly, from 240,000 hours to 250,000 hours." "In 50,000 births, the new vaccine reduced the incidence of infant mortality in Morrovia significantly from 14.2 deaths per 1000 births to 10.3 deaths per 1000 births." "The new Sky Penetrator IV business jet’s cruising range has increased significantly from 3,975 miles to 4,000 miles."
Three different treatments and four different methods are tested for their ability to control acne. What is the value of the LSD (0.05) for the comparison among method means? Treatment 1 Treatment 2 Treatment 3 SUMMARY Treatment 1 Count Sum Average Variance Treatment 2 Count Sum Average Variance Treatment 3 Count Sum Average Variance 3 Anova: Two-Factor With Replication Total Count Sum Average Variance Method 1 5 6 7 ANOVA Source of Variation Sample 6 2 Method 1 2 11 5.5 0.5 2 13 6.5 0.5 2 5 2.5 0.5 6 29 4.833 3.767 Method 2 6 SS 36,75 7 8 7 3 4 Method 2 2 13 6.5 0.5 2 15 7.5 0.5 2 7 3.5 0.5 6 35 5.833 3.767 df 2 Method 3 7 8 9 8 4 6 Method 3 2 15 7.5 0.5 2 17 8.5 0.5 2 10 5 2 6 42 7 3.2 MS 18.4 Method 4 8 9 6 5 6 7 Method 4 2 17 8.5 0.5 2 11 5.5 0.5 2 13 6.5 0.5 6 41 6.833 2.167 F Total 8 56 7 1.714 8 56 7 1.714285714 8 35 4.375 3.125 P-value 2:370761-05 F crit 3.89
Interpret this statistic. Why was gamma applicable here? Please show your work.
Study Purpose: The purpose of this randomized controlled trial was to determine the impact of an app-based digital care program to treat chronic lower back pain compared to usual treatment. Post intervention pain scores were measured using Korff pain measurement scale that ranges from 0 (minimum) to 100 (maximum). The results for this study are summarized in the table below. Table: Mean Pain Reports Change in mean Change in mean Mean difference P- value pain score pain score (95% CI) Intervention group Control group (n=113) (n=64) Korff pain score -25.3 1.6 -26.9 (-33.8, -20) <0.001 Answer the following questions using data from the table above: 1. Is the result for the primary outcome (pain) statistically significant? Answer: YES or NO 2. Explain your answer

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