A student group measures the salinity of a water sample three times, obtaining the following results: 36.1, 35.7, and 35.8 ppt. Calculate the sample standard deviation of these measurements. Enter your result in decimal notation with an appropriate number of significant figures. Enter only the numbers, omitting the units.

Step-by-step explanation:

Standard Deviation where μ=mean, N=number of data

The results are:x= 36.1, 35.7, and 35.8

First, we determine the mean

Mean, μ= (36.1 + 35.7 + 35.8)/3=107.6/3=35.9

Next, for each x, we determine the mean deviation, x-μ

If x=36.1, |x-μ|=|35.1-35.9|=0.8 and =0.64

If x=35.7, |x-μ|=|35.7-35.9|=0.2 and =0.04

If x=35.8, |x-μ|=|35.8-35.9|=0.1 and =0.01

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft