Answer this question please and thank you
2 answers:
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Using the hypothesis test for one sample mean, There is NO SIGNIFICANT EVIDENCE to support the typist's claim
The test statistic :
T = (x - μ) ÷ (s/√(n))
T = (43 - 45) ÷ (15/√70)
T = - 2 ÷ 1.7928429
T = -1.1155
At α = 0.05
Pvalue :
Degree of freedom, df = 70 - 1 = 69
Pvalue = 0.134
Decison region :
Reject if Pvalue < α
Since Pvalue > α We fail to reject the Null
Learn more : brainly.com/question/20262540
Answer:
Option A
Step-by-step explanation:
where,
is the final value
if the initial value
R is the investors rate of return
so,
so the investors rate of return is -11.8%