Examlex
Some experts estimate that the length of time people live in a house has a mean of 7.3 years and a standard deviation of 2.2 years.Explain why you could estimate the probability that 100 people selected at random had lived in their houses for an average of 9 years or more,but you could not estimate the probability that an individual had done so.
Menarche
The first occurrence of menstruation in a person's life, marking the onset of reproductive capability.
Y Chromosome
The sex chromosome typically found only in males. When paired with an X chromosome from the mother, it produces a male child.
X Chromosome
The sex chromosome found in both males and females. Females typically have two X chromosomes; males typically have one. An X chromosome from each parent produces a female child.
Menarche
The first occurrence of menstruation in a person, signaling the beginning of reproductive capability.
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