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3 years ago

Simplify

absmiddle" class="latex-formula">

Mathematics

1 answer:

astra-53 [7]3 years ago

6 0

Answer:

= 2 $\sqrt{6}$

Step-by-step explanation:

$\sqrt{24}$

$\sqrt{4 × 6}$ Since √4 = 2, so

2 $\sqrt{6}$

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What is the decimal of 32/100

katen-ka-za [31]

Answer:

0.32

Step-by-step explanation:

Simply divide 32 into 100 and get 0.32

you could put it into a calculator or write it out and divide.

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3 years ago

What is the C of a circle that has a radius of 4.5

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Step-by-step explanation:

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Step-by-step explanation:

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2 years ago

Read 2 more answers

A researcher is planning to compare the effects of two different types of lights on the growth of bean plants. She expects that

kicyunya [14]

Answer:

The sample size is $n = 36$

Step-by-step explanation:

From the question we are told that

The sample standard deviation is $s = 1.5$

The mean difference of the two groups is $\=x _ 1 - \=x_2 = 1$

The standard error is $SE = \frac{ \= x_1 - \= x_2}{4}$

=> $SE = \frac{1}{4}$

Let assume that the confidence level is 95% hence the level of significance is

$\alpha = (100-95)\%$

=> $\alpha = 0.05$

So the critical value of $\frac{\alpha }{2}$ obtained from the normal distribution table is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically evaluated as

$E = Z_{\frac{\alpha }{2} } * SE$

$E = 1.96 * \frac{1}{4}$

$E = 0.49$

Generally the sample size is mathematically represented as

$n =[ \frac{Z_{\frac{\alpha }{2} * s^2}}{E}]^2$

=> $n = [\frac{1.96 * 1.5}{0.49} ]^2$

=> $n = 36$

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3 years ago