Concerns about climate change and CO, reduction have initiated the commercial production of blends of biodiesel (e.g., from renewable sources) and petrodiesel (from fossil fuel). Random samples of 48 blended fuels are tested in a lab to ascertain the bio/total carbon ratio. (a) If the true mean is .9200 with a standard deviation of 0.0050, 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 .9200 with a standard deviation 2050, what is the sampling distribution of X ? 1. Exactly normal with u= 9200 and o =0.0050. 2. Approximately normal with u= .9200 and o = 0.0050. 3. Exactly normal with u= .9200 and o = 0.0050/V8. 4. Approximately normal with u= .9200 and o, = 0.0050/V48.

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Concerns about climate change and CO, reduction have initiated the commercial production of blends of biodiesel (e.g., from
renewable sources) and petrodiesel (from fossil fuel). Random samples of 48 blended fuels are tested in a lab to ascertain the bio/total
carbon ratio.
(a) If the true mean is .9200 with a standard deviation of 0.0050, 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 .9200 with a standard deviation
2050, what is the sampling distribution of X ?
1. Exactly normal with u= 9200 and o =0.0050.
2. Approximately normal with u= .9200 and o = 0.0050.
3. Exactly normal with u= .9200 and o = 0.0050/V8.
4. Approximately normal with u= .9200 and o, =
0.0050/V48.
Transcribed Image Text:Concerns about climate change and CO, reduction have initiated the commercial production of blends of biodiesel (e.g., from renewable sources) and petrodiesel (from fossil fuel). Random samples of 48 blended fuels are tested in a lab to ascertain the bio/total carbon ratio. (a) If the true mean is .9200 with a standard deviation of 0.0050, 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 .9200 with a standard deviation 2050, what is the sampling distribution of X ? 1. Exactly normal with u= 9200 and o =0.0050. 2. Approximately normal with u= .9200 and o = 0.0050. 3. Exactly normal with u= .9200 and o = 0.0050/V8. 4. Approximately normal with u= .9200 and o, = 0.0050/V48.
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