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MATH 225N WEEK 5 ASSIGNMENT LAB
Week Five Assignment Lab
Step 1: Survey or measure 10 people to find their heights. Determine the mean and
standard deviation for the 20 values by using the Week 3 Excel spreadsheet. Post
a screenshot of the portion of the spreadsheet that helped you determine these
values. How does your height compare to the mean (average) height of
the 20 values? Is your height taller, shorter, or the same as the mean of the
sample?
The mean height from my sample is 64.85, my height is 65 therefore I can say that my
height when compared to the mean of my sample is the same. Because if we were to
round 64.85 to the nearest whole number, we will get 65.
The data in the bold blue ink was given by the professor followed by the data that I have
collected.
My participants were between the ages of 22 years to 77years old.
- How many of each gender did you have in your study?
There were 4 females and 6 males total in my study.
- What are other interesting factors about your group?
Out of the 10 randomly selected patients for this study 6 were African American men, 2 of the females are white and the other two decline to state based on the demographic data we collected. Three of them were retired and seven were employed.
Empirical Rule
Step 3: Use the Week 5 Excel spreadsheet for the following.
- (Use the Empirical Rule tab from the spreadsheet). Determine the 68%, 95%, and 99.7% values of the Empirical Rule in terms of the 20 heights in your height study.
- What do these values tell you?
68% of the heights collected will fall between 60.4% and 69.2%
95% of the heights collected will fall between 56.01% and 74%
99.7% of the heights collected will fall between 51.6% and 78.1%
- Post a screen shot of your work from the Week 5 Excel spreadsheet.
a. (Use the normal probability tab from the spreadsheet). Based on your study results, what percent of the study participants are shorter than you? What percent are taller than you?
My height is 65 inches so based on my study 51.4% of the participants in my study are shorter than me and 48.01% of my participants are taller than me.
b. Post a screen shot of your work from the Week 5 Excel spreadsheet.
