asap please urgently required. 1. Ali required to use inductive coupled plasma mass spectroscopy (1CP-MS) to analyze theamount of copper ion in wastewater samples. The following table shows the result of copperconcentration from two different sample preparation methods.Concentration (mg/L)SampleMethod AMethod BDifference10.390.360.0421.350.840.512.561.760.843.923.350.5755.354.690.669.337.71.63710.7010.520.18810.9210.810.11a) What type of t test should be used to compare the two methods? Explain.b) Does the following result confirm a difference in the two methods at the 95% confidencelevel? Test the appropriate hypotheses.

Method A : mean = 5.565 S.d = 4.2350 n = 8 Method B : mean = 5.004 S.d = 4.2032 n = 8

Answered: 1. Ali required to use inductive…

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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Listed below are amounts of strontium-90 (in millibecquerels, or mBq, per gram of calcium) in a simple random sample by baby teeth obtained from Pennsylvania residents and New York residents born after 1979. Use a 0.05 significance level and Wilcoxon rank-sum test to test the claim that the median amount of strontium-90 from Pennsylvania residents is the same as the median from New York residents. Pennsylvania 155 142 149 130 151 163 151 142 156 133 138 161 New York 133 140 142 131 134 129 128 140 140 140 137 143 1. what is the exact value of R = R 1 (Pennsylvania)? (Round off to 1 decimal place.) 2. what is the value of μ R ? (Type as a whole number.) 3. what is the value of σ R ? (Round off to 2 decimal places.) 4. what is the computed value of z ? (Round off to 2 decimal places.) 5. what is the tabular value of z ? (Round off to 2 decimal places.
The number of contaminating particles on a silicon waferprior to a certain rinsing process was determined for eachwafer in a sample of size 100, resulting in the followingfrequencies:Number of particles 0 1 2 3 4 5 6 7Frequency 1 2 3 12 11 15 18 10Number of particles 8 9 10 11 12 13 14Frequency 12 4 5 3 1 2 1a. What proportion of the sampled wafers had at leastone particle? At least five particles?b. What proportion of the sampled wafers had betweenfive and ten particles, inclusive? Strictly between fiveand ten particles?c. Draw a histogram using relative frequency on thevertical axis. How would you describe the shape of thehistogram?
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