The 150 oranges is a random sample from a certain supplier were weighted and the masses, x grams were recorded. The results are summarised below n=150 sumx=1490 sum=1525000

Calculate a 99% confidence interval for the population mean of x

Preview File Edit E4 View Go Tools Window Help Class Test 3 Questions.pdf l u, i ' Late submission will not be graded Please upload you answer as one pdf document Students should work individually Question 1 The ISO oranges in a random sample from a certain supplier were weighed and the masses. X grams. were recorded. The results are summarised below. n = 150 M: 14910 {x2 =1525000 (i) Calculate a 99% condence interval for the population mean of X. [6] (ii) The supplier claims that the mean mass of his oranges is 100 grams. Use your answer to part (i) to explain whether this claim should be accepted. [1] (iii) State briey why the sample should be random. [1] Question 2 \"OMU'- Imam D @i%m'7:i,1\\f'rl aged Thu 26 May 06:25