25/09/2020 Assignment 3B - Basics of inference
Assignment 3B - Basics of
inference
Click on a question number to see how your answers were marked and, where
available, full solutions.
Question Number Score
Question 1 0 / 11
Question 2 0 / 10
Total 0 / 21 (0%)
Performance Summary
Exam Name: Assignment 3B - Basics of inference
Session ID: 01344237138
Student's Name: K (Katarina) Djordjevic (011cdd57506642ec949f60ac53aa58da)
Exam Start: Fri Sep 25 2020 06:44:24
Exam Stop: Fri Sep 25 2020 07:27:26
Time Spent: 0:43:01
Question 1
A 2012 survey of 46 South African adults indicates that 0.39 of cell phone owners do their
browsing on their phone rather than a computer or other device. The standard error for the
survey was calculated as 0.06. According to an online article, a report from a mobile
research company indicates that 0.253 of all Chinese mobile web users only access the
internet through their cell phones.
Answer the following questions, and where applicable and unless otherwise stated, round
and give your answers to three decimal places.
a)
https://numbas.up.ac.za/run_attempt/69025?resource_link_id=_2016282_1 1/4
Assignment 3B - Basics of
inference
Click on a question number to see how your answers were marked and, where
available, full solutions.
Question Number Score
Question 1 0 / 11
Question 2 0 / 10
Total 0 / 21 (0%)
Performance Summary
Exam Name: Assignment 3B - Basics of inference
Session ID: 01344237138
Student's Name: K (Katarina) Djordjevic (011cdd57506642ec949f60ac53aa58da)
Exam Start: Fri Sep 25 2020 06:44:24
Exam Stop: Fri Sep 25 2020 07:27:26
Time Spent: 0:43:01
Question 1
A 2012 survey of 46 South African adults indicates that 0.39 of cell phone owners do their
browsing on their phone rather than a computer or other device. The standard error for the
survey was calculated as 0.06. According to an online article, a report from a mobile
research company indicates that 0.253 of all Chinese mobile web users only access the
internet through their cell phones.
Answer the following questions, and where applicable and unless otherwise stated, round
and give your answers to three decimal places.
a)
https://numbas.up.ac.za/run_attempt/69025?resource_link_id=_2016282_1 1/4
