Atriathlon consisting of swimming, cycling, and running is one of the more strenuous amateur sporting events. an article reports on a research study involving twenty-five male triathletes. maximum heart rate (beats/min) was recorded during performance of each of the three events. for swimming, the sample mean and sample standard deviation were 189.0 and 7.3, respectively. assuming that the heart-rate distribution is (approximately) normal, construct a 98% ci for true mean heart rate of triathletes while swimming. (round your answers to one decimal place.) , beats/min

Confidence interval (CI) mean upper (+) and lower (-) value of z(s/square root of n)

CI + / -  z(s/square root of n)

As we known that at 98% CI the z value is 2.054 (see attached tables)

therefore  

189 + / - 2.054 (7.3 / square root (9) )

189 + / - 2.054 (2.433)

189 + / - 4.997  

Therefore

CI= 189 – 4.997 OR  189 + 4.997

OR

CI= 184.003 to 193.997

According to the question’s requirement CI round to 1 decimal

CI= 184.0 to 194.0

in a word, a scientific question is testable. a testable question is one that asks about objects, organisms or events found in the world around it

name and explain one of the event that occurs during meiosis that increases the variation in offspring even more than simple reproduction?