7. A committee studying employer-employee relations incomplete that each employee would admonish his or her direct overseer and in deflect the overseer would admonish each employee. To perceive reactions in-reference-to the tender, 120 service personnel and 160 settle personnel were clarified at vague. Seventy-eight of the service personnel and 90 of the settle personnel were in kindness of the tender. To experience the fancy that the population proportions are resembling, what is the crucial rate using the 0.05 plane of soundness?
8. A financial planner wants to parallel the comply of allowance and augmentation alternate funds. Fifty thousand dollars is invested in each of a pattern of 35 allowance and 40 augmentation funds. The balance extension for a two-year continuance for the allowance funds is $900. For the augmentation funds the balance extension is $875. Allowance funds possess a pattern rule dissolution of $35; augmentation funds possess a pattern rule dissolution of $45. Assume that the population rule dissolutions are resembling. At the 0.05 soundness plane, is there a dissonance in the balance complys of the two funds? What is the ineffectual fancy?
9. High ground tyros were careful in a tutor's arrogation that the diffusiveness of spell (hours) that a tyro studies for a experience, the upper the experience beak. The tyros serene the grounds and the tutor did the retrogression dissection after a while the subjoined results (See the investigation rasp).
To experience the ineffectual fancy that the mount is cipher, what are the t-experience statistic and the t-crucial rate using the 0.05 soundness plane?
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