A bike is selling for $240. The original price was $300. What percent of the original is the bike selling for?
2 answers:
Answer: 80%
Step-by-step explanation:
Let's use the rule of 3 here.
We know that the original price or 100% of the price was $300
($300 - 100%)
We want to know what percent of the original price (let that be our x) is the bike selling for now that costs $240.
($240 - x)
Let's do our chart.
Solve for x.
The bike is selling for 80% of the original price.
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Answer:
The requirements that are necessary for a normal probability distribution to be a standard normal probability distribution are <em>µ</em> = 0 and <em>σ</em> = 1.
Step-by-step explanation:
A normal-distribution is an accurate symmetric-distribution of experimental data-values.
If we create a histogram on data-values that are normally distributed, the figure of columns form a symmetrical bell shape.
If X N (µ, σ²), then
, is a standard normal variate with mean, E (Z) = 0 and Var (Z) = 1. That is, Z
N (0, 1).
The distribution of these z-variates is known as the standard normal distribution.
Thus, the requirements that are necessary for a normal probability distribution to be a standard normal probability distribution are <em>µ</em> = 0 and <em>σ</em> = 1.