Assume that fomales have pulse rates that are normally distributed with a mean of u=73 0 beats per minute and a standard deviation ofa = 12.5 beats per minute Complete parts (a) through (c) below a. If 1 adult foemale is randomly selected, find the probability that her pulse rate is less than 76 beats per minute The probability is (Round to four decimal places as needed) b. If 4 adult females are randomly selected, find the probability that they have pulse rates with a mean less than 76 beats per minute The probability is (Round to four decimal places as needed) c. Why can the normal distribution be used in part (b), even though the sample size does not exceed 30? OA. Since the distribution is of sample means, not individuals, the distribution is a normal distribution for any sample size OB Since the distribution is of individuals, not sample means, the distribution is a normal distribution for any sample sze OC. Since the mean pulse rate exceeds 30, the distribution of sample means is a normal distnibution for any sample size OD. Since the original population has a normal distribution, the distribution of sample means is a normal distribution for any sample size

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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.