) A sample of historical 120 months' river flow is collected and the following is determined: the sample mean is 430 mls, sample standard deviation is 28 m/s. Determine a confidence interval of 95%. In the class of 300 children surveyed, the sample mean weight was 11.3 kg and the standard deviation was 1.8 kg. Find the 99% confidence interval for this data. 2) In a shop, apples are packed in 2 kg bags. A customer suspects the bags may...
Students investigating the packaging of potato chips purchased 0 bags of chips marked with a net weight of 20.5 grame. They carefully weighed the contents of each bag, recording the following weights in gramas: 20.2.2.1, 29.1, 288, 28.8. Click the boon to wow the table Do the data willy the sumptions for interence? Is the randomization condition satufet? OA Yes, there is definitely evidence to believe that the bags of chips were sampled at random O No, the bags were...
Weight (gm)
8.499993
8.499998
8.499996
8.499996
8.499987
8.499987
8.499996
8.500008
8.499997
8.499996
Steps 1. Open the Excel workbook almer-jones.xls 2. Type the text Sample mean weight in cell C1 and calculate the sample mean weight in cell C2 3. Type the text Test statistic in cell C4 and calculate the test statistic in cell C5 using the formula y-8.5 o/V10 4. Use the standard normal tables to determine the P-value 5. Hence determine whether the claim that the true weight...