Does anyone know how to determine the 95% confidence interval for the difference of the sample means if I only know the standard deviation of the sample mean and the sample mean difference? I'm struggling lol. The standard deviation is 0.69 and the diff of sample means is 1.74 if that helps.

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.

answer: 40.95

step-by-step explanation:

a) 32pie square meters

step-by-step explanation:

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.