Questions 6 to 10 are related. based on a random sample of n=15 observations, we have obtained a sample mean of x(bar)=1050. the
goal is to test: h(0): μ≤1000 and h(a): μ>1000 assume that x is normally distributed with σ=150. what is the standard error (σ (x bar) )? rounded to two decimal places.
