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4 years ago

Evaluate log4 16. (2 points) −4 −2 2 4

Mathematics

2 answers:

aleksley [76]4 years ago

7 0

Answer:

The correct option is 3. The value of given expression is 2.

Step-by-step explanation:

The given expression is

$log_4{16}$

Rewrite the given expression.

$log_4{4^2}$

According to the property of log.

$log_aa^x=x$

Using the property of log, we get

$log_4{4^2}=2$

Therefore the value of given expression is 2 and option 3 is correct.

soldi70 [24.7K]4 years ago

6 0

Log with the base of 4 of 16 is 2

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A researcher obtains t = 2.35 for a repeated-measures study using a sample of n = 8 participants. Based on this t value, what is

ZanzabumX [31]

Answer:

$p_v =2*P(t_{7}>2.35)=2*0.0255=0.051$

If we compare the p value and using the significance level given $\alpha=0.05$ we have $p_v>\alpha$ so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 5% or 1% of significance we fail to reject the null hypothesis.

Step-by-step explanation:

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.

The significance level is not provided but we can assume it as $\alpha=0.05$ . First we need to calculate the degrees of freedom like this:

$df=n-1=8-1=7$

The next step would be calculate the p value for this test. Since is a bilateral test or two tailed test, the p value would be:

$p_v =2*P(t_{7}>2.35)=2*0.0255=0.051$

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4 years ago

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vodka [1.7K]

Answer:

<h3 /><h3>Interest:</h3>

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<h3>❤◍ jess bregoli ◍❤</h3>

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3 years ago

A family goes grocery shopping every week. in a month the costs of the groceries are $72.42, $91.50, $58.99, and $69.02. 5. what

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1) Mean
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$\mu = \frac{1}{N} \sum x_i = \frac{1}{4}(72.42+91.50+58.99+69.02) = \frac{291.93}{4}=72.98 $$

2) Standard deviation
The standard deviation is given by:
$\sigma = \sqrt{ \frac{1}{N} \sum (x_i-\mu)^2 }$
where $\mu$ is the mean, that we already found at point 1), and N=4. Substituting data, we have:
$\sigma = \sqrt{ \frac{1}{4} ((-0.56)^2+(18.52)^2+(-13.99)^2+(-3.96)^2) } =$
$= \sqrt{ \frac{1}{4} (554.71)} = \sqrt{138.68} =11.78 $$

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Answer:

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3 years ago

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kirza4 [7]

Answer:

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Step-by-step explanation:

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