Question 4 Background : BMI BMI is a person's weight in kilograms divided by the square of the person's height in meters. According to the U.S. Department of Health and Human Services, the mean BMI for U.S. male adults in 2008 was established to be 33.7. A researcher speculates that the mean BMI for all U.S. male adults in 2018 is more than it was a decade ago in 2008. To investigate the researcher's speculation, a study was conducted in 2018 which involved a random sample of 20 U.S. male adults. Question 4 Subquestions 4.a TBD Clearly state the hypotheses to be tested. points No answer entered. Click above to enter an answer. 4. 0.5 Select the option that best completes this statement: point(s) The parameter of interest u represents the O population mean BMI for all U.S. male adults in 2008. population mean BMI for all U.S. male adults O population mean BMI for all U.S. male adults in 2018 4.C TBD After evaluating the p-value, we reject Ho because the resulting p-value is s a = 0.05 (the significance level). We can say that the results are statistically points significant and we have enough evidence to support the alternative hypothesis. What type of error could we have made, if we made one? O Type II O Power O Type l 4.d 1 point(s) The lead researcher would like to increase the probability of correctly concluding that the mean BMI has increased. What could the researcher do in the future? take a random sample of 40 adults O take a random sample of 15 adults use a 1% significance level use a 10% significance level