n=100
x=276
σ=15
Error,E = Zα/2 × (σ/√n)
= 1.96 x 15/√100
=2.94
So, CI = x ± E
= 276 ± 2.94 g
4.35. A randomly selected sample of bicycle helmets was tested for impact resistance. Given the data...
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I
feel test for a new exam was given to randomly selected seniors the
exam was graded and then sample mean and simple standard deviation
we are calculated based on the results of the exam creator claims
that on the same exam nine times out of 10 the seniors will have an
average score within 3% and 70% of the coefficients interval was
90% 95% of 99% what is the margin of error calculate the confidence
interval and explain what...
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