Question

Asked Mar 15, 2020

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Find *z _{α}*

**88%=**

Step 1

**The normal distribution:**

A continuous random variable *X* is said to follow normal distribution with mean µ and standard deviation σ if the probability density function of *X* is,

Step 2

**Calculating the z-value:**

The required z-value is calculated as follows:

Step 3

The standard normal table is given below:

From the above table, it is clear that 0.60 is the average of the values 0.0606 and 0.0594. There for –Zα/2 is **–1.555 (= (-1.55+-1.56)/2)**

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