I If the Null Hypothesis States That There Is No

question 53

Multiple Choice

i. If the null hypothesis states that there is no difference between the mean income of males and the mean income of females, then the test is one-tailed.
Ii) If we are testing for the difference between two population means, it is assumed that the sample observations from one population are independent of the sample observations from the other population.
Iii) When sample sizes are less than 30, a test for the differences between two population means has n
- 1 degrees of freedom.

• A) (i), (ii) and (iii) are all correct statements
• B) (i) and (ii) are correct statements, but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (ii) is a correct statement, but not (i) and (iii).

Comprehend the adaptations and systems of various invertebrates for nutrition and locomotion.

Recognize the difference between complete and incomplete metamorphosis in insects.

Identify characteristics of nematodes and their abundance among animal groups.

Understand the environmental adaptations of deep-sea organisms.

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Definitions:

One-millionth

A fractional unit representing one part in a million of anything.

Gram

A metric unit of mass equal to one thousandth of a kilogram.

Abbreviation

A shortened form of a word or phrase used to represent the full term.

Liter

A metric unit of volume equal to 1,000 cubic centimeters or approximately 0.26 US gallons.