Problem 2: Did the Covid-19 quarantine increase the screen time? On average Canadians spend 3.5 hours on their smartphones per day. However, during the Covid-19 lockdown period, a Toronto research base conducted a survey on an SRS of 86 Canadians and found that the average time spent looking at screens is 4.2 hours with a standard deviation of 2.13 hours. a) Do we have some evidence to suggest that Canadians spend more time on screen due to the quarantine? Explain. b) Perform a hypothesis test at a significance level, alpha = 0.01.

Problem 2: Did the Covid-19 quarantine increase the screen time? On average Canadians spend 3.5 hours on their smartphones per day. However, during the Covid-19 lockdown period, a Toronto research base conducted a survey on an SRS of 86 Canadians and found that the average time spent looking at screens is 4.2 hours with a standard deviation of 2.13 hours. a) Do we have some evidence to suggest that Canadians spend more time on screen due to the quarantine? Explain. b) Perform a hypothesis test at a significance level, alpha = 0.01.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

What if our number had exactly 2 digits to the right of the decimal point? Could I find a number larger than 27.4 that would still round down to 27? What is the largest possible value it could have?
Problem 3. Given A= 5 -1 0 2 find A+l₂
Answer please
Assignment 9: Problem 4
Previously, De Anza's statistics students estimated that the amount of change daytime statistics students carry is exponentially distributed with a mean of $0.88. Suppose that we randomly pick 25 daytime statistics students. Find the probability that an individual had between $0.80 and $1.00. Graph the situation, and shade in the area to be determined.
Problem. 5 : Perform the indicated operations. -2 1 214 -1 -1 -21 5 1 -2 -3 -1 1 1 1 -2 0 -2
In step 1, I don't understand how b is an element of only H and not k. Please let me know. Thank you
Step 3 We already have a leading 1 in row 2, column 2. To get a zero in row 1, column 2 we can add -1 times row 2 to row 1 and put the result in row 1. To get a zero in row 3, column 2 we can add 2 times row 2 to row 3 and put the result in row 3. 1 1 10 0 1 0-1 9. 1 20 1 -5 0 1 2 -5 *-2 11 0 -4 0 0 Submit Skip (you cannot come back)
Problem 4: Determine and [A] for x= [2 4 5]¹ 8 [A] = -9 1 15 -1 2-10 3 6
Mathematics for Electrical Engineers Problem Set 6 Evaluate the following: S L-¹ Ls2-8s+25- 5 L-¹1-₂ 2s2-3s+4-
7 Problem 10. Given A= 2 5 -1 0 1 6 find A+13 -3 2