23. Many overweight people have difficulty losing weight. Prevention magazine reported that researchers from Washington University of Medicine studied the diets of 48 adult weight loss participants. They used food diaries, exercise monitors, and weigh-ins. They found that the participants ate an average of 236 more calories on Saturdays than they did on the other weekdays. This would amount to a weight gain of 9 pounds per year with 4 standard deviation that population mean was 7.87. So if you are watching your diet, be careful on Saturdays.
a) Are the statistics reported in this study descriptive or inferential in nature?
b) What are the variables under study?
c) What is Target population?
d) What is the population under study?
e) Was a sample collected? If so, from where?
f) What conclusions led to type I & II error
g) What is the Null hypothesis and Alternative hypothesis about this scenario
h) What is the decision regard to Null hypothesis according to the finding from the finding at 5% level of significance?
From the information given, comment on the relationship between the variables.