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jasenka [17]
3 years ago
12

Z* for 90% confidence is ________. (hint: use z-table c, or software.) answer to three decimal places x.xxx

Mathematics
1 answer:
Aloiza [94]3 years ago
4 0

Answer:

We have to find the z critical value at 100% - 90% = 10% level of significance.

Since the normal distribution has two tails, we therefore, need to divide the significance level into two tails with each tail having area of 5%.

Now using the standard normal table, the z critical is:

z=\pm1.645



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The complete question is attached.

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