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8-3 Homework: Chapter 8 (Sections 8 4 through 8 6) Saved Help Save & Exit Submit Check my work carbon ratio. (@) If the true mean is 9350 with a standard deviation of 0.0090, within what interval will 90 percent of the sample means fall? (Round your answers to 4 decimal places.) 5 The interval is from to points (b) If the true mean is 9350 with a standard deviation of 0.0090, what is the sampling distribution of X eBook Hint 1. Exactly normal with // = 9350 and o = 0.0090. Ask 2. Approximately normal with / = 9350 and o = 0.0090. 3. Exactly normal with // = 9350 and Print OF = 0.0090 / V38. References 4. Approximately normal with // = 9350 and OF = 0.0090 / V38. 01 02 0 3 04 Mc Graw