CAPE Applied Mathematics Unit 1 · 2016 · Paper 1 · Question Q35
A t-test is used to test whether solar coils last an average of 7 years. A sample of 10 of these solar coils have a mean life of 6.75 years and a standard deviation of 0.5 years. The value of the test statistic, t, is
- (A)-1.5
- (B)-3
- (C)-4.5
- (D)-5
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