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A group of 17 ninth-grade students selected on the basis of an expressed “interest” in science were

Question: A group of 17 ninth-grade students selected on the basis of an expressed “interest” in science were given a test measuring their knowledge of basic scientific concepts. The test was constructed to yield a normal distribution with a mean for ninth graders equal to 78. ( \[\mu =78\] ) The school counselor wants to know if there is a difference in the performance of these students and all ninth graders.

Given

\[\overline{X}=84\] \[\widehat{S}=16\] N = 17 \[\alpha =.05\]

a. Identify the appropriate hypotheses (1 point)

b. Compute t (2points)

c. Identify Critical Value (1 point)

d. Decision ( 1 point)

H0 :\[\mu =78\]
H1:\[\mu \ne 78\]
Critical Value 2.12
Computed t 1.5462
Decision Fail to reject Ho
Price: $2.99
Answer: The solution consists of 2 pages
Deliverables: Word Document


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