Answer:
standard deviation = $472.97
Step-by-step explanation:
mean $1,437
97.35% range between $387 and $2,137
z = (x - μ) / σ
- μ = 1,437
- z = since this is a to tailed distribution, we must divide 0.9735 by 2 = 0.48675 or 0.4868. The z score for 0.4868 in a two tail distribution = 2.22
- x = choose either 387 or 2,137 for x, the difference with μ = 1,050 either way
2.22 = 1,050 / σ
σ = 1,050 / 2.22 = $472.97
The Experimental probability would be 1/2 or 50% it goes that way for both, hope that helps
3 times the product of 5 and b is reduced by 2
3*(5*b)-2
15b-2
