A Random Sample of 60 Students in the Business Statistics

question 88

Essay

A random sample of 60 students in the business statistics course answered a survey on the average number of hours they spent on statistics each week.Unfortunately,the original data were lost and all that remains is the frequency table below.From these data,calculate the estimated sample standard deviation. $\begin{array}{cccccc}\text { Class } & \text { Hrs } & \text { N } & \text { Midpt } & \text { fM } \\1 & 0-3 & 18 & 1.5 & 27 \\2 & 4-7 & 16 & 5.5 & 88 \\3 & 8-11 & 14 & 9.5 & 133 \\4 & 12-15 & 10 & 13.5 & 135 \\5 & 16-19 &\underline { 2} & 17.5 & \underline {35}\\&&60&&418\\\end{array}$

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Definitions:

Sex-linked Inheritance

A mode of inheritance that is associated with genes located on the sex chromosomes, often leading to traits or disorders manifesting differently in males and females.

X Chromosome

One of the two sex chromosomes, X and Y, that determine genetic sex. The X chromosome carries a significant number of genes responsible for various bodily functions.

Physical Contact

Interaction involving touch between individuals, which can influence emotional well-being and social bonding.

Autism

A developmental disorder characterized by challenges in social interaction, communication, and by restricted and repetitive behaviors.