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vesna_86 [32]
3 years ago
9

im giving extra points, can someone please tell me if this is right or not? im not sure if it is because i dont fully understand

how to do this stuff.

Mathematics
1 answer:
MissTica3 years ago
8 0

Answer:

ok, so this is what i got, i am personally confused...

(you can delete this after you see this, its not much of a help..)

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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

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

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

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   E =  1.96 * \frac{1}{4}

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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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4 years ago
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