A Researcher Obtains Z = 1

question 51

Multiple Choice

A researcher obtains z = 1.45 for a one-sample z test.What is the decision for this test at a .05 level of significance?

• A) to reject the null hypothesis
• B) to retain the null hypothesis
• C) it depends on whether the test is one-tailed or two-tailed
• D) there is not enough information to make a decision

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Definitions:

Nucleosomes

Fundamental subunits of chromatin, composed of a segment of DNA wound around a core of histone proteins, facilitating DNA packing in the cell nucleus.

Histones

Proteins that package and order DNA into structural units called nucleosomes, playing key roles in gene regulation.

Purine

A type of nitrogenous base found in DNA and RNA, including adenine and guanine, which pairs with pyrimidine bases in the genetic code.

Pyrimidine

One of the two types of nitrogenous bases found in nucleic acids, including cytosine, thymine (in DNA), and uracil (in RNA).