Suppose That a Random Sample of 100 Observations Was Drawn

question 53

Essay

Suppose that a random sample of 100 observations was drawn from a population. After calculating the mean and standard deviation, each observation was standardised and the number of observations in each of the intervals below was counted. Can we infer at the 10% significance level that the data were drawn from a normal population? $$\begin{array} { | c | c | } \hline \text { Intervals } & \text { Frequency } \\\hline Z \leq - 1 & 12 \\\hline - 1 < Z \leq 0 & 32 \\\hline 0 < Z \leq 1 & 36 \\\hline Z > 1 & 20 \\\hline\end{array}$$

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Definitions:

Angiotensin II

Peptide derived from angiotensin I; stimulates vasoconstriction and aldosterone secretion; also called active angiotensin.

Blood Volume

The total volume of blood circulating within an individual's vascular system.

ADH Production

The synthesis and release of antidiuretic hormone, also known as vasopressin, primarily by the posterior pituitary gland, which helps regulate water balance in the body.

Hyperventilation

Rapid or deep breathing that leads to a decrease in carbon dioxide levels in the blood, potentially causing dizziness or tingling.