Chapter 5, Section 2, Exercise 034 Find the z* values based on a standard normal

Question

Chapter 5, Section 2, Exercise 034

Find the z* values based on a standard normal distribution for each of the following.

Chapter 5, Section 2, Exercise 034

Find the z* values based on a standard normal distribution for each of the following.

(a) A 78% confidence interval for a proportion.
Round your answer to three decimal places.
±z*=± _________________

(b) An 84% confidence interval for a slope.
Round your answer to three decimal places.

±z*=± ________________

(c) A 92% confidence interval for a standard deviation.
Round your answer to three decimal places.

±z*=± _____________________

Explanation / Answer

a) z*= ± Z0.11 = 1.227                                                                                                                                         

b) z*= ± Z0.08 = 1.405                                                                                                                                         

c) z*= ± Z0.04 = 1.751                                                                                                                                          

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