A researcher measured life satisfaction of 50 pet owners and found an average life satisfaction rating of 20.2. The population mean for life satisfaction is 18. The standard deviation is 2 and the standard error is .283 . Perform a ttest and write a conclusion. a, Identify the independent and dependent variables. b. Identify the null and alternative hypotheses. c. What type of test will you perform? d. Alpha is set to .05. What are the degrees of freedom? What is your critical t-value (table D)? e. Conduct a statistical test of the hypothesis. Write out the formula. For t-test, what is the effect size (calculate cl)? Report if the p-value is less than or greater than .05. f. Calculate a condence interval around the mean satisfaction scores of pet owners. g. Interpret your results (put into words, using words and numbers)