What was the rate of committing a type I error for the After School time period?, Statistics questions

I have 20 questions I'm working on. Some questions are specific to an article. I'm including the 3 articles. I have been working on these questions, and have answered 18, when I copied the questions it did not copy the answers I chose. Not sure if what I have is right. Question 6 and 12 I have not been able to figure out how to get the answer.Following is the link to the articles on google drive if articles can't behttps://drive.google.com/folderview?id=0B0MDT1WVLFkFNmgxeTVTR2cydHM&usp=sharing1.Refer toDale article. What was the rate of committing a type I error for the AfterSchool time period?1.2%12.0%5%0%2.Refer toMontgomery article. Is how heavy a child is (as measured by BMI SD score) significantlyrelated to his or her level of physical activity (PAL) in this study?YesNo3.Researchers risk making a type IIerror when:They conclude that means are differentThey conclude that means are the sameThey have too many subjects in their studyThey measure too many variables in their study4.Refer to Montgomery article. Fromthe correlation analyses in Figure 1, how much variability does time spentsedentary account for in PAL?33%11%57%22%5.Refer to Montgomery article. In themultiple regression analyses, is sex significantly related to PAL?YesNo6.Refer to Montgomery article. Ifpercent MVPA accounts for 4.8% of the variability in PAL, how much variationdoes age, sex, and BMI SD score (together) account for in PAL?11.4%12.0%14.8%6.6%7.Consider two separate groups ofpeople who had their body fatness measured. The mean and standard deviation forgroups 1 and 2 were 37.4%  4 % and 38.2%  7%, respectively. The spread ofscores is:Greater in group 1Greater in group 2The same in both groupsToo low8.Refer to Montgomery article. Whichvariable is inversely related to PAL?Time spent sedentaryTime spent in moderate activityAgeNone are inversely related9.If you wanted to determine whetherthe number of hours spent in class online was related to exam grades for statsstudents, which statistical test would you use?CorrelationDependent t-testIndependent t-testANOVA10.Becauseof its dependence on two extreme scores, the ______ is not typically a usefulmeasure of variability.VarianceStandard deviationConfidence intervalRange11.Measuresof central tendency include all of the following EXCEPT:Mean deviationMedianMeanMode12.Refer toFaigenbaum article. For the chest press results, which statement is correct?Chest press was significantly related to the number of daysof training per week.The change in strength in the control group was notdifferent from the 1 day group.The change in strength in the control group was notdifferent from the 2 day group.The change in strength in the 1 day group was greater thanin the control group.13.Considertwo separate groups of people who had their body fatness measured. The meanand standard deviation for groups 1 and 2 were 37.4%  4 % and 38.2%  7%,respectively. For group 1, the 4% means:The body fat measurement is 4% accurate.68.26% of the % fat values fall between 35.4% and 39.4%.The groups % fat did not fall below 4%.68.26% of the % fat values fall between 33.4% and 41.4%.14. If you wanted to determine whethermale or female stats students scored better on exams, which statistical testwould you use?CorrelationDependent t-testIndependent t-testANOVA15.Refer toDale article. The children on the active day had a higher activity levelafter school than on the restricted day. Was this difference statisticallysignificant?YesNo16.From the choices below, identify thestrongest correlation coefficient.-0.930.900.87-0.0517.Refer to the Dale article. What typeof statistical test was used in Table 2 to determine whether children onrestricted days versus non-restricted days had a different activity level afterschool?CorrelationDependent t-testIndependent t-testANOVA18.If you wanted to determine whetherthe classs test grades improved from the midterm to the final exam for statsstudents, which statistical test would you use?CorrelationDependent t-testIndependent t-testANOVA19.Consider two separate groups ofpeople who had their body fatness measured. The mean and standard deviation forgroups 1 and 2 were 37.4%  4% and 38.2%  7%, respectively. If you wanted todetermine whether the two groups differed significantly in their % fat, theappropriate statistical test is:ANOVAIndependent t-testDependent t-testCorrelation20.Type I errors are made when, basedon the results of a study, the researcher:Correctly concludes that the intervention was effectiveIncorrectly concludes that the intervention was effectiveCorrectly concludes that the intervention was not effectiveIncorrectly concludes that the intervention was not effective