i need to write 10 words

. . . n I. In a psychological testing experiment, 100 subjects are selected randomly and their reaction time, in seconds, to a particular stimulus is measured. Past experience suggests that the population standard deviation in reaction times to these types of stimuli is 3 seconds and that the distribution of reaction times is approximately normal. The (sample) average time for the subjects is 37 seconds. Give an upper 97.5% bound (one-sided) for the mean reaction time. Write your answer with 3 digits after the decimal point. For example, 0. 782 or O. 352