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Concerns about climate change and C02 reduction have initiated the commercial production of blends of biodiesel (e.g., from renewable sources) and petrodiesel (from fossil fuel). Random samples of 33 blended fuels are tested in a lab to ascertain the bioftotal carbon ratio. (a) If the true mean is .9510 with a standard deviation of 0.0030. within what interval will 99 percent of the sample means fall? (Round your answers to 4 decimal places.) The interval is from to (b) If the true mean is .9510 with a standard deviation of 0.0030, what is the sampling distribution of IT ? 1. Exactly normal with ,u : .9510 and Cl : 0.0030. 2. Approximately normal with ,u : .9510 and U : 0.0030. 3. Exactly normal with ,u : .9510 and 0'; = 0.0030 NE. 4. Approximately normal with ,u = .9510 and 0'; : 0.0030 /\\/33