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a random sample of n=40 hamburgers selected and the fat content was measured. the sample mean content found was 32.5 gm and the SD 5.0

a random sample of n=40 hamburgers selected and the fat content was measured. the sample mean content found was 32.5 gm and the SD 5.0 gm. Does the data indicate that the fat content of all hamburgers is higher than 30.0 gm? use significant level .01

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