A pharmaceutical company wants to know whether an experimental drug has a stabilising effect on blood pressure. Twenty randomly selected subjects were given the drug and after sufficient time for the drug to have an impact, their systolic blood pressures were recorded. Table 1. Systolic blood pressure measurements 106 118 118 123 128 128 129 130 132 133 136 136 137 140 140 143 147 152 161 184 (i) Find the sample mean, variance and standard deviation for x. (Show your working)
A pharmaceutical company wants to know whether an experimental drug has a stabilising effect on blood pressure. Twenty randomly selected subjects were given the drug and after sufficient time for the drug to have an impact, their systolic blood pressures were recorded. Table 1. Systolic blood pressure measurements 106 118 118 123 128 128 129 130 132 133 136 136 137 140 140 143 147 152 161 184 (i) Find the sample mean, variance and standard deviation for x. (Show your working)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
A pharmaceutical company wants to know whether an experimental drug has a stabilising
effect on blood pressure. Twenty randomly selected subjects were given the drug and after sufficient time for the drug to have an impact, their systolic blood pressures were recorded.
Table 1. Systolic blood pressure measurements
106 118 118 123 128 128 129 130 132 133 136 136 137 140 140 143 147 152 161 184
-
(i) Find the sample
mean , variance and standard deviation for x. (Show your working)
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