Find the critical value z necessary to form a confidence interval at the level of confidence shown below. c=0.89 Zc = (Round to two decimal places as needed.)
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![## Finding the Critical Value \( z_c \)
To form a confidence interval at the specified level of confidence, follow these steps:
1. **Identify the given confidence level:**
\( c = 0.89 \)
2. **Calculate the critical value \( z_c \):**
(Round to two decimal places as needed.)
\[ z_c = \boxed{\phantom{0}} \]
Make use of the Z-table or statistical tools to find the required \( z_c \) value that corresponds to the given confidence level.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Faf5b27fc-182c-458d-bf52-a3d5fb8d4e7e%2F9a0c41a6-9a47-448d-9861-60e8bee6454a%2Fmgo4od_processed.png&w=3840&q=75)
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