It is generally believed that nearsightedness affectsabout 12% of all children. A local elementary school registered 100 incoming kindergarteners.a) Find the mean and standard deviation of the sampling distribution and describe the samplingdistribution using the notation ?(?, ?).b) What is the probability that less than 10% of the incoming kindergarteners are nearsighted?c) What is the probability that more than 15% of the incoming kindergarteners are nearsighted?d) If this school measures at the 80th percentile for all incoming kindergarten classes, whatproportion of incoming kindergarteners are nearsighted?
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
It is generally believed that nearsightedness affects
about 12% of all children. A local elementary school registered 100 incoming kindergarteners.
a) Find the mean and standard deviation of the sampling distribution and describe the sampling
distribution using the notation ?(?, ?).
b) What is the
c) What is the probability that more than 15% of the incoming kindergarteners are nearsighted?
d) If this school measures at the 80th percentile for all incoming kindergarten classes, what
proportion of incoming kindergarteners are nearsighted?
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