Let X... We observe X=9 out of n=15. Is the battery more likely to last more than 5 years?
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Ho: p = 0.5 vs.
Ha : p > 0.5
ii. p^ = X/n = 9/15 = 0.6
we compute Standard error by
SE = SQRT ...
Hypothesis testing, test statistics and rejection area are investigated and discussed in the solution. The solution is detailed and well presented.