Can someone help me to understand am I wrong or did Pearson mess up??

[ADOLF_HITLER]

So here is the question made my Pearson right, so here I am ment to find the mean of the volumes what I got is that I removed 1.89 (anomaly) then I added 0.55 +0.54 + 0.16 which gave me 1.25 right then i divided by 3 which gave me 0.41(66666667) right so the answer is ment to be 0.42 right but the MS for this exam paper says otherwise.
. - Here is the MS.

 

[badrobot14]

View attachment 73744View attachment 73745
So here is the question made my Pearson right, so here I am ment to find the mean of the volumes what I got is that I removed 1.89 (anomaly) then I added 0.55 +0.54 + 0.16 which gave me 1.25 right then i divided by 3 which gave me 0.41(66666667) right so the answer is ment to be 0.42 right but the MS for this exam paper says otherwise.
.View attachment 73746 - Here is the MS.

"Pineapple juice contains a protease called bromelain. A student uses this method to investigate the digestion of solid gelatine protein by bromelain." - 4WBI1/1B (paper reference)


Hahaha this is a brilliant question. And the reason for mark scheme answer might shock you. See, the question in question paper has a typing mistake. the 4th reading in the table is 0.16 in question (which also seems like an anomaly) but mark scheme has it as 0.61. Ignoring the 1.89 as anomaly reading: 0.55+0.54+061 = 1.7
1.7/3 = 0.57 (correct answer)

 

[ADOLF_HITLER]

THANKSSSSSSSSSSSSSSSSSSSS, APRECIATE THE HELP MAN, was stuck at it for like 10 minutes straight wondering why the marking scheme has added 0.61, thank you so much.