2. Formulate the null and alternative hypothesis of the following problems. a. A department store is interested to know if their average profit this year decreased as compared to 30 percent last year. b. Five brands of batteries are tested to show their difference based on their average battery lives.

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2 This is Mathematics in Modern World subject. kindly help me with this one. I Promise to give HELPFUL RATING .

2. Formulate the null and alternative hypothesis of the following problems.
a. A department store is interested to know if their average profit this year
decreased as compared to 30 percent last year.
b. Five brands of batteries are tested to show their difference based on their
average battery lives.
Transcribed Image Text:2. Formulate the null and alternative hypothesis of the following problems. a. A department store is interested to know if their average profit this year decreased as compared to 30 percent last year. b. Five brands of batteries are tested to show their difference based on their average battery lives.
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