Question: a. Does the data provide compelling evidence for concluding that true average strength for the 1078 grade exceeds that uestion posed in part (a) by

a. Does the data provide compelling evidence for concluding that true average strength for the 1078 grade exceeds that uestion posed in part

(a) by carrying out a formal test of hypotheses. Is the result different from what you conjectured in part (a)?

c. Does it appear that ICU stay for patients given the ventilation treatment is normally distributed? Explain your reasoning.

d. Estimate true average length of stay for patients given the ventilation treatment in a way that conveys information about precision and reliability.

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