Answer: 340 mm
Given:
Length of spider – 10 mm
Length of guinea pig – 35 cm
To solve the problem, we must first convert the length of the guinea pig in cm to mm. Since there are 10 mm in 1 cm, multiply 35 by 10 to get length of guinea pig in mm.
35X10=350 mm
Then, deduct 10 mm from 350 mm
350-10
340 mm
The guinea pig Is longer than the spider by 340 mm.
B. family is the answer I believe
If you have samples of n 1 equals 22 and n 2 equals 20, in performing the pooled-variance t test, you have 40 degrees of freedom.
The t-test method is a method where we analyze two sets of data which both these data are independent of each other. This pooled variance test helps us in getting the overall variance in both these different sample sets when we know that both the sample sets are almost equal.
To calculate degrees of freedom, we have the formula
df = n1 +n2 -2
According to the question, n1= 22 and n2= 20
Therefore, degree of freedom= 22 +20 -2 = 40
Hence, degree of freedom is 40.
To learn more about t-test, click
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Answer:
Chocolate (Independent variable)
Explanation:
The independent variable is manipulative. The experimenter can manipulate it. It produces one or more results in a study called the dependent variable. It is called the independent variable because its variation doesn't depend on another variable in an experiment. The independent variable can be controlled or manipulated only by the researcher or experimenter.
For example:
Amount of water and fertilizer provide a tree. Water and fertilizer is an (independent variable) which can be manipulated by the experimenter.
Result: Height of the tree depends on water and fertilizer quantity (dependent variable) which can not be manipulated by researcher.
He used the profit he made as an investment, and in this way his fortune grew ever bigger and bigger. If ever there was a profit, he would not spend it, but use to expand the current business, or if this way not optimal, to buy new businesses and assets.
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