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jok3333 [9.3K]
3 years ago
7

Even though the population standard deviation is unknown, an investigator uses z rather than the more appropriate t to test a hy

pothesis at the .05 level of significance.
(a) Is the true level of significance larger or smaller than .05
(b) Is the true critical value larger or smaller than that for the critical z?
Mathematics
1 answer:
Marta_Voda [28]3 years ago
3 0

Answer:

a) The level of significance is large because here z is not appropriate.

b) The true critical value is larger than z because the level of significance is large.

Step-by-step explanation:

a) Based on the question under consideration, the true level of significance is larger than .05 level of significance is large, the reason being that z is not appropriate in this case.

b) The true critical value is larger than that of the critical z, this is because the level of significance is large.

t* in P(T > t*) = 0.975 is more than z* = 1.96 in P(z> z*) =0.975

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Read 2 more answers
Can someone please help me with this?
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A music buff wants to estimate the percentage of students at a midwestern university who believe that elvis is still alive. how
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The margin of error for population proportion is calculated as:

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