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# 10_ The mean yield of corn in the United States is about 120 bushels per acre. surey of 40 farmers this year gives Sanple mean of 124.3 bushels per acre_ We want to...

## Question

###### 10_ The mean yield of corn in the United States is about 120 bushels per acre. surey of 40 farmers this year gives Sanple mean of 124.3 bushels per acre_ We want to know whether this good evidence that the national mean this year is not 120 bushels per acre_ Assume that the fatTers surveyed are an SRS fTOm the population of all cormercial cOrn growers aIdthat the standard deviation of the yield in this population is 10 bushels per acre. Is there enough evidence from the sample to suggest that t

10_ The mean yield of corn in the United States is about 120 bushels per acre. surey of 40 farmers this year gives Sanple mean of 124.3 bushels per acre_ We want to know whether this good evidence that the national mean this year is not 120 bushels per acre_ Assume that the fatTers surveyed are an SRS fTOm the population of all cormercial cOrn growers aIdthat the standard deviation of the yield in this population is 10 bushels per acre. Is there enough evidence from the sample to suggest that the population mean is not [20 bushels per acre?

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