Question

please answer parts a,b,and C

Assume that females have pulse rates that are normally distributed with a mean of720beats per minutes and a Mandard devono Question Help 125 beperme Complete parts af 1 adult female is randomly selected, find the probability that her pulse rate is less than 78 beats per minute The probability is 0.6844 (Round to four decimal places as needed) 1.1 16 adult females are randomly selected, find the probability that they have puise rates with a mean less than 18 The probability is (Round to four decimal places as needed) c. Why can the normal distribution be used in part(), even though the sample site does not exceed 307 A Since the original population has a normal distribution, the distribution of sample means is a normal distribution for any samples O B. Since the mean pulse rate exceeds 30, the distribution of sample means is a normal distribution for any sample size O C. Since the distribution is of sample means, not individuals, the distribution is a normal distribution for any sample size OD. Since the distribution is of individuals, not sample means, the distribution is a normal distribution for any sample size Click to select your answer(s)

Answer 1

X= female pulse rates XN Nu = 72, 8 =12.5) Plx478) = f(x24 < 78-72) allz<+0.48) öll 2<0.48) 20.6844 12.5 b) nib PLX <78) e Pl -e ( 78-72 ) Pyn 12.54 =PtZ21.92) = 0.9726 Since the original population I has a normal distribution the distribution of sample means is normal for any sample data Ornon la