the grades in various subject of a student are given below. test at 5% level of significance that there is a significant difference in grades. mathematics 72 80 83 75 statistics 81 74 77 88 english 82 90 87 80 research 74 71 77 70
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Use the following information to answer the next three exercises. A grocery store is interested in how much money, on average, their customers spend each visit in the produce department. Using their store records, they draw a sample of 1,000 visits and calculate each customer’s average spending on produce.
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10
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is it coeeect answer or not?
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