A Phosphorus-31 Atom Has _______ Protons, _______ Neutrons, and _______

question 92

Multiple Choice

A phosphorus-31 atom has _______ protons, _______ neutrons, and _______ electrons.

• A)31; 31; 31
• B)15; 16; 16
• C)15; 31; 15
• D)15; 16; 15
• E)16; 15; 15

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Definitions:

Kruskal-Wallis Test

A nonparametric statistical test used to compare three or more independent samples to determine if they originate from the same distribution.

P-value

The probability of obtaining a test statistic at least as extreme as the one that was actually observed, assuming that the null hypothesis is true.

Test Statistic

A value calculated from sample data during a hypothesis test that is compared to a threshold value to decide whether to reject the null hypothesis.

Wilcoxon Signed Rank Sum Test

A statistical test that doesn't rely on parameters to compare two matched groups, aiming to determine if there is a difference in their population mean ranks.