Please show five steps in hypothesistesting. When the sample size is largerthan 30 for both samples, we assume theconcerned sampling distributionapproximates a normal curve, and we cancompute the obtained z score. We alsofocus on the two-tailed test and theresearch/alternative hypothesis simplypredicts the population means aredifferent. 48.8 SW As the director of the local Boys Club, you have claimed for years thatmembership in your club reduces juvenile delinquency. Now a cynical member of yourfunding agency has demanded proof of your claim. Random samples of members andnonmembers are gathered and interviewed with respect to their involvement indelinquent activities. Each respondent is asked to enumerate the number of delinquentacts he has engaged in over the past year. The average numbers of admitted acts ofdelinquency are reported below. What can you tell the funding agency?Sample 1 (Members)X₁ = 10.3S1N₁******40Sample 2 (Nonmembers)X₂ E 12.332N₂= 4.2P55

If sample size less than 30 than we use the t test statistic but this is not sufficient for using t…

Answered: 8.8 SW As the director of the local…

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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Can you assist me in answering this, please? I don't know where to begin. (this is not graded but, rather, an excersice conducive to acquisition).
A. Headache Pain : There are many over-the-counter pain relievers. By the end of the semester, you have a tremendous headache and are looking for the most effective pain relief available. You conduct a study comparing the three most popular pain relievers and a placebo to see which work best. You use only subjects with headaches and record the amount of time (in minutes) it takes for their headache to go away after they receive the medication. You randomly assign 60 participants to one of the four conditions using a double- blind procedure. (Use a = .05) Drug A Drug C 10 Placebo Drug B 10 70 30 30 60 40 20 50 40 10 10 60 30 10 10 40 40 30 30 30 30 30 10 40 20 20 20 60 40 20 30 50 30 30 10 30 30 20 20 60 20 10 10 20 40 30 20 50 20 20 10 40 20 30 30 IV (or predictor) variable DV (or criterion) variable What type of analysis should you conduct to determine which method relieves headache pain most swiftly?
1. The percentage of 12- to 17-year-olds who reported talking at least once in the past year with their parents about the dangers of drug, tobacco, or alcohol is 60% nationally. A state youth council believes this proportion is higher in their state, where there has been an intense media campaign about this issue. A survey of randomly chosen students from across the state shows 1032 of 1642 students reporting they are having these conversations with their parents. Is there evidence that the percent of students using drugs, tobacco or alcohol in this state is above the national rate?
1. The following are the numbers of minutes it took random samples of boys and girls to complete a written test given for the renewal of their driving licenses. Boys 10.9 6.4 8.9 9.1 7.7 9.7 11.8 9.2 10 10.2 9.5 | 10.8 8 11 7.5 Girls 7.4 9.9 9.8 10.9 9.4 10.3 7.7 11.5 7.6 9.3 8.8 9.6 Use U test at 0.05 level of significance to decide whether to accept H, : 4 = or the alternative hypothesis H1 : 41 < 4z.
Compute G.M. from the following statistical data: Marks No. of Students 0-5 5 5-10 7 10-15 9. 15-20 12 20-25 15 25-30 10 30-35 9. 35-40 6. 40-45 5 45-50
Answer the following question.
1. 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…
You want to examine the relationship between dropping out of high school and delinquency. You have a random sample of 11 students. You have the number of delinquent offenses that each student reported committing in the year before and after dropping out of school. The following table shows the data. Before dropping After dropping Student out out 1 7 2 9. 2 3 4 7 7 8 11 6 11 13 7 8 4 8 8 10 9. 5 7 10 2 1 11 3 From performing a hypothesis test to determine if the mean number of delinquent differs after dropping out, what is the p-value? (Round off to two decimal places if necessary)
1. A developmental psychologist would like to determine how much fine motor skill changes for children from age 3 to age 5. He takes a random sample of 9 three-year old children and gives each a manual dexterity test that measures fine motor skill. He tests these same children one and two years later, when they are each four- and five-years old. Higher scores on this test indicate better fine motor skills. Is there a significant difference in the motor skills at these ages? Test with an α = 0.01 and show ANOVA SPSS output.
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