Explain the clandestine synthesis of methamphetamine

Reference no: EM13558451

Lithium is sometimes used in the clandestine synthesis of methamphetamine, and is often found as an impurity in final product. The amount of lithium impurities in two different methamphetamine seizures were thought to be the same, but the defendant claimed the samples were different. The methamphetamine content was indistinguishable. The lithium content was analyzed using a spectrophotometric technique (ICP-OES) and the results are as follows:

Sample A: n=4, mean lithium content = 26 ppm, s.d. = 5 ppm

Sample B: n=4, mean lithium content= 40 ppm, s.d. = 8 ppm.

Perform a t-test to compare the two means at the 95% confidence level.

What is the calculated value of t (to two sig. figs)?

What is the critical value of t (to two sig. figs)?

Is the lithium content of the methamphetamine samples significantly different at the 95% confidence level?

Reference no: EM13558451

Questions Cloud

Find radius of curvature of assembly at 100 degrees celsius : A temperature controller, designed to work in a steam environment, involves a bimetaillic strip constructed of brass and steel,connected at their ends by rivets. Each of the metals is 2.0mm thick.

Explain the calculated value of t for the new method : Perform a t-test at the 95% confidence level to determine if the new method contains bias. What is the calculated value of t for the new method

Improve your decision-making in a group setting : Question:Bazerman and Moore suggest that we should understand the biases of others. Discuss this concept in terms of why it is important for us to understand other peoples' biases. In your discussion, focus on how you might be able to improve y..

How far from the persons feet is the center of mass : A bed rests on two scales which are 2.0 meters apart. A person lies down on the bed with their feet over one scale which reads 320. N while the other scale reads 380. N. How far from the persons feet is the center of mass?

Explain the clandestine synthesis of methamphetamine : Lithium is sometimes used in the clandestine synthesis of methamphetamine, and is often found as an impurity in final product. The amount of lithium impurities in two different methamphetamine seizures were thought to be the same

What is the acceleration of a rising hot-air balloon : What is the acceleration of a rising hot-air balloon if the ratio of the air density outside the balloon to that inside is 1.39? Neglect the mass of the balloon fabric and the basket.

Define the overall charge on the proteins : Estimate the overall charge on the following proteins at pH 3, 7, and 10. If a mixture of these three proteins were run on an IEF gel, what would the gel look like

Evaluate how much force must he exert : Superman must stop a 100km/h train in 150 m to keep it fromhitting a stalled car on the tracks. If the train's mass is3.6 x 10(to the 5th) kg, how much force must he exert

Evaluate what is the mass of the sphere : A hollow sphere of inner radius 8.0cm and outer radius 9.0cmfloats half -submerged in a liquid of density 800kg/m3, What is the mass of the sphere

User Account

All Pages