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1
24
Collected in summer
14
7
8
24
Collected in autumn
12
72
9
43
1.
If you randomly select one butterfly from the table above, what is
the probability of selecting a red butterfly or one collected in spring?
2.
If you randomly select one butterfly collected in spring, one
butterfly collected in summer, and one butterfly collected in autumn,
what is the probability of selecting all yellow butterflies?
3. Determine the appropriate approach to conduct a hypothesis test for
this claim: Fewer than 5% of patients experience negative treatment
effects. Sample data: Of 500 randomly selected patients, 2.2%
experience negative treatment effects.
A) Use the normal distribution.
B) Use the Student t distribution.