Revenue of Large Businesses A researcher estimates that the average revenue of the largest businesses in the United States is greater than $24 billion. A random sample of 50 companies is selected, and the revenues (in billions of dollars) are shown. At α = 0.05, is there enough evidence to support the researcher’s claim? Assume σ = 28.7.   178      122      91        44        35 61        56        46        20        32 30        28        28        20        27 29        16        16        19        15 41        38        36        15        25 31        30        19        19        19 24        16        15        15        19 25        25        18        14        15 24        23        17        17        22 22        21        20        17        20

MATLAB: An Introduction with Applications
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Revenue of Large Businesses A researcher estimates that the average revenue of the largest businesses in the United States is greater than $24 billion. A random sample of 50 companies is selected, and the revenues (in billions of dollars) are shown. At α = 0.05, is there enough evidence to support the researcher’s claim? Assume σ = 28.7.

 

178      122      91        44        35

61        56        46        20        32

30        28        28        20        27

29        16        16        19        15

41        38        36        15        25

31        30        19        19        19

24        16        15        15        19

25        25        18        14        15

24        23        17        17        22

22        21        20        17        20

 

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