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1 year ago

homo rudolfensis is so morphologically similar to ________ that they may be regarded as the same species.

SAT

1 answer:

LenKa [72]1 year ago

6 0

In terms of morphology, Homo rudolfensis and <u>Homo habilis </u>can be considered to be one species.

An extinct species of early Pleistocene humans known as Homo habilis, or "handy man," lived in East and South Africa between 2.31 million and 1.65 million years ago. When H. habilis was first described as a species in 1964, there was a lot of debate about it.

Many scientists suggested that it be grouped with Australopithecus africanus, the only other early hominin that was known at the time, but as time went on and more pertinent discoveries were made, Homo habilis gained more recognition. By the 1980s, it was believed that Homo habilis was a direct progenitor of modern humans, developing into Homo erectus along the way.

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The professor informs the class that there will be a test next week. what is the probability that a randomly selected student st

marusya05 [52]

The probability that students who were randomly selected studied for the test, if they pass it with a B or higher grade is: D. 0.80.

<h3>How to calculate the probability?</h3>

In this exercise, you're required to determine the probability that students who were randomly selected studied for the test, if they pass it with a B or higher grade. Thus, we would apply Bayes's theorem.

Let S represent studied for.

Let B represent a score of B or higher grade

Therefore, we need to find P(S|B):

$S|B = \frac{B|S \times S}{B|S \times S\; +\; B|S' \times S'} \\\\S|B = \frac{0.55 \times 0.6}{0.55 \times 0.6 \;+ \;0.2 \times 0.4}\\\\S|B =\frac{0.33}{0.33 + 0.08} \\\\S|B =\frac{0.33}{0.41}$

S|B = 0.80.

Read more on probability here: brainly.com/question/25870256

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<u>Complete Question:</u>

At the beginning of the semester, a professor tells students that if they study for the tests, then there is a 55% chance they will get a B or higher on the tests. If they do not study, there is a 20% chance that they will get a B or higher on the tests. The professor knows from prior surveys that 60% of students study for the tests. The probabilities are displayed in the tree diagram.

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1 year ago

Which of the following is a technique to improve internal validity

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The technique to improve internal validity is D) Addition of a control group.

<h3>What is internal validity?</h3>

Internal validity serves as the study which bring about the establishment of a trustworthy cause-and-effect relationship that can be found in treatment and an outcome.

it should be noted that Internal validity also helps to eliminate alternative explanations , hence, The technique to improve internal validity is D) Addition of a control group.

Learn more about internal validity on:

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COMPLETE QUESTOIN:

Which of the following is a technique to improve internal validity ____________?

A) Experimenter expectancy

B) Participant bias

C) Use of a confederate

D) Addition of a control group

4 0

2 years ago

The density of a cube that measures 1.00 cm on each side and has a mass of 2.0g is __.