Inst 314 Homework Question 2022

Running head: INST 314 HOMEWORK 5 1
INST 314 Homework 5
Name
Institution

INST 314 HOMEWORK 5 2
INST 314 Homework 5
Question 1
Most people don't succeed in losing weight by dieting, and on average people don't lose any
weight. Proponents of the quantized-self movement believe that by tracking eating behavior,
using apps like MyFitnessPal, people will lose more weight. Pedro randomly selected 25 people
from his university who were interested in dieting. He then had them use MyFitnessPal to track
their eating behavior. He wants to understand whether using the app leads to greater weight loss.
1a) (Must answer all correct for points on question 1a.)
i. What is Pedro’s research question?
Does using of MyFitnessPal app to track ones eating behavior lead to increased weight loss?
ii. What is the predictor (independent variable)?
Extent of using MyFitness Pal app.
iii. What is the outcome (dependent variable)?
Weight loss
iv. What kind of dependent (outcome) measure is this?
Weight is a ratio scale. A ratio scale variable is quantitative and possess a character of
origin. Weight is quantitative and can have a zero point hence is a ratio scale.
1b).What should his null and alternate hypotheses be in words and in symbols?
A hypothesis is a kind of explanation where the researcher has limited evidence and would
wasn’t to investigate (King’oriah, 2012).
Null Hypothesis: Using of MyFitnessPal app to track ones eating behavior does not lead to
increased weight loss.
Alternative Hypothesis: Using of MyFitnessPal app to track ones eating behavior lead to
increased weight loss.
H0: (μ1- μ2) = 0