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5. Based on literature, the director learned that the average weight of adult women under 30 years old is 60 kilograms, and the variation number is 40. If age is not distinguished, the average weight is 62 kilograms. Please answer the following questions respectively: 1. Assuming that the literature is correct, if the director sampled 12 adult women under the age of 30, investigated their weight, and conducted a hypothesis test on "whether the weight of adult women under the age of 30 is different from the weight of adult women nationwide", What would be the expected effect size? What will the statistical test power be? 2. Continuing from the previous question, if we want to maintain a statistical test power of 0.8 under the test "Is the weight of adult women under 30 years old different from the weight of adult women nationwide?", how many samples should be taken at least?

          5. Based on literature, the director learned that the average weight of adult women under 30 years old is 60 kilograms, and the variation number is 40. If age is not distinguished, the average weight is 62 kilograms. Please answer the following questions respectively:
1. Assuming that the literature is correct, if the director sampled 12 adult women under the age of 30, investigated their weight, and conducted a hypothesis test on "whether the weight of adult women under the age of 30 is different from the weight of adult women nationwide", What would be the expected effect size? What will the statistical test power be?
2. Continuing from the previous question, if we want to maintain a statistical test power of 0.8 under the test "Is the weight of adult women under 30 years old different from the weight of adult women nationwide?", how many samples should be taken at least?

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