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Alenkinab [10]
3 years ago
6

Assessment: To help assess student learning in her developmental math courses, a mathematics professor at a community college im

plemented pre- and posttests for her students. A knowledge-gained score was obtained by taking the difference of the two test scores.
(a) What type of experimental design is this?
Mathematics
1 answer:
Flauer [41]3 years ago
6 0

Answer: Randomized design.

Step-by-step explanation:

Randomization is the process of assigning the treatments or tested factors to the experimental units in an experiment in accordance to definite laws or probability is technically known as randomization.

A randomized design relies on randomization to control for the effects of extraneous variables.

In a randomized design, objects or subjects are assigned to groups completely at random. One standard method for assigning subjects to treatment groups is labelling each subject and afterwards, using a list of random numbers to select from the labelled subjects. It is used when the experiment has treatment conditions and subjects. Also, subjects are randomly assigned to different treatments.

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140.3 is 23% of what number?
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Distribute -6 ( 3c + 5)
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Step-by-step explanation:

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2 years ago
Urgent:
rjkz [21]

Step-by-step explanation:

<h3>Given:</h3>
  • CM ⊥ AB
  • ∠3 = ∠4
<h3>To prove: </h3>
  • △AMC ≅ △BMC
<h3>Solution:</h3>
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<u>CM⊥AB - given, therefore</u>

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<u>Then</u>

  • ∠AMC ≅ ∠BMC
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<u>So we have congruent two angles and a side between them on triangles AMC and BMC:</u>

  • △AMC ≅ △BMC as per ASA congruency theorem
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