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rusak2 [61]
3 years ago
11

An ultrasound technician sometimes uses microbubbles as a contrast agent to improve the clarity of ultrasounds. However, the tec

hnician has a limited time to work, since the ultrasound process quickly destroys the microbubbles. The following expression represents the concentration, in microbubbles per milliliter, of the microbubble suspension remaining in a client t seconds after the technician has begun the ultrasound process. 100,000,000*0.5^t/120 Which expression shows the multiple of the concentration remaining each minute as a constant or coefficient?
SAT
1 answer:
zlopas [31]3 years ago
4 0

Answer:

Answer A

Explanation:

Because 100,000,000*^0.5=1

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Using the t-distribution, as we have the standard deviation for the sample, it is found that the 95% confidence interval for the number of units students in their college are enrolled in is (11.7, 12.7).

<h3>What is a t-distribution confidence interval?</h3>

The confidence interval is:

\overline{x} \pm t\frac{s}{\sqrt{n}}

In which:

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The critical value, using a t-distribution calculator, for a two-tailed <em>95% confidence interval</em>, with 49 - 1 = <em>48 df</em>, is t = 2.0106.

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More can be learned about the t-distribution at brainly.com/question/16162795

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