This week's activity involves finding out how accurately a website can guess your age. More importantly, are there any characteristics that influence its determination of how old you are?

First, go to the websitehttp://www.how-old.net

to upload a photo of yourself.

Using your phone is the easiest. Simply chose 'Take a Photo' and shoot a selfie!

Upload photos under the conditions indicated below and thenreport the website's guess minus your true age.

For instance, if the website guesses 24, and you are actually 30, enter a -6. If the website guesses 34, and you are actually 30, enter 4. Got it?

1/ What is the value (guess - true age) when you are wearing sunglasses? 11

2/ What is the value (guess - true age) when you are not wearing sunglasses? -5

3/ What is the value (guess - true age) when you are smiling? -1

4/ What is the value (guess - true age) when you are not smiling? -7

5/ What is the value (guess - true age) when you are squinting? -6

6/ What is the value (guess - true age) when your eyes are wide open? 3

For the questions above, you used the http://how-old.net site to determine whether wearing glasses, smiling, or squinting made a difference in the age that was reported. Think about the hypothesis testing statements that would be used for these types of experiments.

7/What is the population parameter being tested: population mean (), population proportion (p), or population mean difference (_diff)?

8/What are the null and alternative hypothesis statements if you are interested in the question, "Does smiling make you look younger?"Write the hypotheses first in words, and then write them in proper statistical notation showing the parameter being tested(see preceding question)and the value that it is being tested against(the null value).

-9/What are the null and alternative hypothesis statements if you are interested in the question, "Does squinting make you look older?"Write the hypotheses first in words, and then write them in proper statistical notation showing the parameter being tested(, p, or _diff)and the value that it is being tested against(the null value).

-10/What are the null and alternative hypothesis statements if you are interested in the question, "Does wearing sunglasses fool the machine?"Write the hypotheses first in words, and then write them in proper statistical notation showing the parameter being tested(, p, or _diff)and the value that it is being tested against(the null value).

THANK YOU! :)