0.1 / 0.1 pts Question 20 What is the appropriate conclusion for the consumer organisation to make about the average weight of the kingsize pet food bags? O The manufacturer's claim that the mean weight of the bags is exactly 3.5kg is true. Based on this sample we can't say that the mean weight of the bags differs from 3.5kg The average weight of the bags is probably lower than 3.5kg. The average weight of the bags is 3.3kg Question 19 0.05 / 0.1 pts Suppose the mean weight in the consumer organisation's sample was 3.3kg. The Figure below shows the sampling distribution for samples of size 100, with the 'unlikely' regions indicated with red arrows. Use the drop down menus to complete the following sentences Arrow number A4 indicates where the sample mean lies. This is in the likely region. 40- 30- Frequency 20- 50%?
Freq 2.5%{ 10 0 3.10 2.5%{ 1 3.20 3.30 3.40 3.50 3.60 Sample Means 3.70 3.80 3.90 A1 A2 Answer 1: A2 A4 Answer 2: likely A3 A4 A5 A6 A7
0 / 0.1 pts Question 18 Suppose the manufacturer's claim is correct, and the kingsize bags of pet food do, on average, weigh 3.5kg. To see what sorts of sample means we would expect if the manufacturers claim is correct, we produce a sampling distribution. We produced a sampling distribution of 300 samples of size 100 taken from a population where kingsize bags weigh 3.5kg. This sampling distribution is displayed below. One of the blocks in the sampling distribution is highlighted. What does this block represent? 40 30 Frequency 20- 2.5% 2.5%