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jenyasd209 [6]
3 years ago
5

When testing μ, how do we decide whether to use the standard normal distribution or a Student's t distribution? If the x distrib

ution is normal and n ≥ 30 with known σ we use the Student's t. With the same conditions and unknown σ we use the standard normal. If the x distribution is normal and n ≥ 20 with known σ we use the standard normal. With the same conditions and unknown σ we use the Student's t. If the x distribution is normal and n ≥ 30 with known σ we use the standard normal. With the same conditions and unknown σ we use the Student's t. Whenever we assume the populations are independent, we always use the standard normal.
Mathematics
1 answer:
Helga [31]3 years ago
8 0

Answer:not sure

Step-by-step explanation:

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