3 years ago

What is the "brains" of the computer?

2 answers:

7 0

The brains of a computer is a microprocessor called the central processing unit because its a chip containing millions of tiny transistors

romanna [79]3 years ago

3 0

Answer:

The central processing unit (CPU)

Explanation:

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A coin is tossed 5 times what is the probability of getting all heads? Express your answer as a simplified fraction or a decimal

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1/32 or 0.0313

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chance of 1 head = 1/2

all heads => $\frac{1}{2} ^{5} = \frac{1}{32}$

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3 years ago

Students in a statistics class are conducting a survey to estimate the mean number of units students at their college are enroll

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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:

$\overline{x}$ is the sample mean.

t is the critical value.

n is the sample size.

s is the standard deviation for the sample.

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.

Hence:

$\overline{x} - t\frac{s}{\sqrt{n}} = 12.2 - 2.0106\frac{1.6}{\sqrt{49}} = 11.7$

$\overline{x} + t\frac{s}{\sqrt{n}} = 12.2 + 2.0106\frac{1.6}{\sqrt{49}} = 12.7$

The 95% confidence interval for the number of units students in their college are enrolled in is (11.7, 12.7).

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

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3 years ago