P pipe0076 New member Joined Jul 8, 2012 Messages 2 Jul 8, 2012 #1 μ=48 σ=15 What is the probability that a sample size of 50 would yield a sample mean within the interval μ±2σ/sqrtofn I am unsure of how to use the graphs symmetry to solve this.
μ=48 σ=15 What is the probability that a sample size of 50 would yield a sample mean within the interval μ±2σ/sqrtofn I am unsure of how to use the graphs symmetry to solve this.
tkhunny Moderator Staff member Joined Apr 12, 2005 Messages 11,325 Jul 9, 2012 #2 Since you did not share the graph, one can only guess. Try adding up the four middle sections.
