Concerns about climate change and CO2 reduction have initiated the commercial production of blends of biodiesel (e.g., from renewable sources) and petrodiesel (from fossil fuel). Random samples of 39 blended fuels are tested in a lab to ascertain the bio/total carbon ratio. (a) If the true mean is .9350 with a standard deviation of 0.0060, within what interval will 98 percent of the sample means fall? (Round your answers to 4 decimal places.) The interval is from to (b) If the true mean is .9350 with a standard deviation of 0.0060, what is the sampling distribution of X ? 1. Exactly normal with u = .9350 and o = 0.0060.

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Concerns about climate change and CO2 reduction have initiated the commercial production of blends of biodiesel (e.g., from
renewable sources) and petrodiesel (from fossil fuel). Random samples of 39 blended fuels are tested in a lab to ascertain the bio/total
carbon ratio.
(a) If the true mean is .9350 with a standard deviation of 0.0060, within what interval will 98 percent of the sample means fall? (Round
your answers to 4 decimal places.)
The interval is from
to
(b) If the true mean is .9350 with a standard deviation of 0.0060, what is the sampling distribution of X ?
1. Exactly normal with u = .9350 and o = 0.0060.
Transcribed Image Text:Concerns about climate change and CO2 reduction have initiated the commercial production of blends of biodiesel (e.g., from renewable sources) and petrodiesel (from fossil fuel). Random samples of 39 blended fuels are tested in a lab to ascertain the bio/total carbon ratio. (a) If the true mean is .9350 with a standard deviation of 0.0060, within what interval will 98 percent of the sample means fall? (Round your answers to 4 decimal places.) The interval is from to (b) If the true mean is .9350 with a standard deviation of 0.0060, what is the sampling distribution of X ? 1. Exactly normal with u = .9350 and o = 0.0060.
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