Question 20 1 pts A package delivery service collects data about customer satisfaction. Once a package has been delivered, the recipient is sent a message {via text or email} asking whether or not they were happy with the service. If the package is lost, then no message is sent to the recipient. What is this a problem with? Choose the correct answer below. 0 Data accuracy 0 Data completeness 0 Data appropriateness 0 Data trustworthiness Question 21 1 pts Customers at a clothing store spend an average of $114.20 with a standard deviation of $48.70. What is the standard deviation for the total amount spent by 75 independent customers? Answer to two decimal places as needed. Question 22 1 pts A confidence interval of (0.2491, 0.3549) is found for the proportion of Canadians who are debt-free based on a random sample of 500 Canadians. Which confidence level was used? 80% confidence O 90% confidence O 95% confidence O 99% confidence O 99.9% confidenceQuestion 23 1 pts The distribution of amount of time (minutes) playing mobile games per day can be modelled using a Normal distribution with a mean of 54 minutes and a standard deviation of15.8 minutes. What is the probability that a randomly chosen person will spend between 40 and 60 minutes playing mobile games daily? Answer as a probability {between 0 and 1] to four decimal places. Question 24 1 pts An organization that studies data Security would like to know what concerns Canadians have about security of their personal information. An online survey on the organization's website asks if individuals have concerns about data security when making purchases online. Which type of bias is most likely to be present? 0 Undercoverage 0 Voluntary response bias 0 Non-response bias 0 Response bias 0 There is no bias likely to be present