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QUESTION 10 Questions 10 - 14 concern the following idea: A tea merchant has customers who want more tannin in their tea for a more
QUESTION 10 Questions 10 - 14 concern the following idea: A tea merchant has customers who want more tannin in their tea for a more bitter flavour. She developed a new blend of tea leaves which she believes will increase the amount of tannin that is released into a cup of tea brewed for 3 minutes. With the previous blend there was an average of 103mg of tannin in a cup of tea. She randomly selected 60 samples of the new blend of tea and brewed them for 3 minutes each, and measured the tannin levels in each cup of tea. These samples gave a mean of X = 104.9mg and a standard deviation of S = 6.2mg If you were trying to show support for the claim that the new blend of tea has more tannin than the old, select the necessary null and alternative hypotheses for conducting a hypothesis test (let , be the population mean amount of tannin in a cup of tea with the new blend). O a. Ho X = 104.9 Hi x = 104.9 Ob. How=103 Hip = 103 Oc. H : #= 104.9 H : H > 104.9 O d. H: M= 103 H : H > 103
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