All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions.
Let X denote the mass of pineapple tarts and denote the population mean mass of pineapple tarts.
Unbiased estimate of population mean = 0.8825
Test Statistic, at 10% level of significance.
Using GC, p-value
, do not reject
There is insufficient evidence at 10% significance level to reject the stall owner’s claim.