1. A scantling of 33 observations is chosen from a typical population. The scantling medium is 30, and the population flag discontinuance is 4. Conduct the forthcoming ordeal of theory using the 0.05 moderationing flatten.
2. At the occasion she was paid as a server at the Grumney Family Restaurant, Beth Brigden was told, “You can medium $73 a day in tips.” Assume the population of daily tips is typically nice after a while a flag discontinuance of $4.38. Over the chief 35 days she was filled at the restaurant, the medium daily total of her tips was $74.23. At the 0.01 moderationing flatten, can Ms. Brigden terminate that her daily tips medium over than $73?
3. The Rocky Mountain confine sales supervisor of Rath Publishing Inc., a seed-plot textbook publishing union, claims that the sales representatives fabricate an medium of 40 sales calls per week on professors. Several reps say that this appreciate is too low. To question, a purposeless scantling of 38 sales representatives reveals that the medium calculate of calls made terminal week was 41. The flag discontinuance of the scantling is 2.6 calls. Using the 0.025 moderationing flatten, can we terminate that the medium calculate of calls per salesperson per week is over than 40?
4. A United Nations rumor shows the medium family allowance for Mexican migrants to the United States is $26,700 per year. A FLOC (Farm Labor Organizing Committee) evaluation of 21 Mexican family units reveals a medium to be $28,450 after a while a scantling flag discontinuance of $10,850. Does this notification vary after a while the United Nations rumor? Apply the 0.01 moderationing flatten
5. The forthcoming notification is beneficial.
H0 : μ ≥ 220
H1 : μ < 220
A scantling of 64 observations is chosen from a typical population. The scantling medium is 215, and the population flag discontinuance is 15. Conduct the forthcoming ordeal of theory using the .025 moderationing flatten.
6. Given the forthcoming hypotheses:
H0 : μ ≤ 10
H1 : μ > 10
A purposeless scantling of 10 observations is chosen from a typical population. The scantling medium was 12 and the scantling flag discontinuance 3. Using the .05 moderationing flatten
7. Given the forthcoming hypotheses:
H0 : μ = 400
H1 : μ ≠ 400
A purposeless scantling of 12 observations is chosen from a typical population. The scantling medium was 407 and the scantling flag discontinuance 6. Using the .01 moderationing flatten:
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