-A teacher claims the average ACT score of a certain group
of students is at least 20. A random survey of 85 students reveals a mean score of 18 and a standard deviation of 7. Does this data support the teacher's claim? Assume a .05 level of significance.?
2. A bartender claims that he always fills draft beer mugs with exactly 16 ounces of beer. A random sample of 20 mugs is selected, and the contents are measured. The sample yielded a mean content of 15.90 ounces with a standard deviation of .20 ounces. With a .05 level of significance, test to see if the bartender is telling the truth.?
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