Two different methods were used to measure the iron content of a cereal. Are the means...
Two different methods were used to measure the iron content of a cereal. Are the means of the two methods significantly different? Assume that the population standard deviation for each method is essentially the same.
Method 1:
-Mean [Fe+3] (mM) 1.382
-Standard Deviation (mM) 0.025
-# of measurements 4
Method 2:
-Mean [Fe+3] (mM) 1.346
-Standard Deviation (mM) 0.039
-# of measurements 4
Homework Answers
Request Answer!
We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
Add Answer to:
Two different methods were used to measure the iron content of a
cereal. Are the means...
Two methods were used to measure florescence lifetime of a dye. Method 1 Method 2 Mean...
Two methods were used to measure florescence lifetime of a dye. Method 1 Method 2 Mean lifetime 2.382 2.346 Standard deviation 0.035 0.049 Number of measurements 5 5 a) Are the standard deviations significantly different at 95% confidence level? b) Are the mean values significantly different at 95% confidence level?
38. In a physics experiment, two different methods were used to measure the angle of deflection w...
38. In a physics experiment, two different methods were used to measure the angle of deflection when a subatomic particle collides with a certain material. Ten specimens of the material were used to compare the two methods, For each specimen, the angle of deflection was measured using both methods. For each specimen, the method used first was determined by the flip of a fair coin. The difference between the measured angles was calculated for each specimen. A test of the...
4. The Ti content (wt%) of two different ore samples was measured several times by the...
4. The Ti content (wt%) of two different ore samples was measured several times by the same method. The results for sample 1 were <x> = 0.013960 and si = 0.0003435 for five measurements and the results for sample 2 were <x2> 0.013400 and s2 = 0.0003937 for four measurements. Are the two results significantly different at the 95th confidence level?
A researcher compares the effectiveness of two different instructional methods for teaching electronics. A sample of...
A researcher compares the effectiveness of two different instructional methods for teaching electronics. A sample of 102 students using Method 1 produces a testing average of 76.4. A sample of 84 students using Method 2 produces a testing average of 62.7. Assume that the population standard deviation for Method 1 is 15.67, while the population standard deviation for Method 2 is 6.76. Determine the 80 % confidence interval for the true difference between testing averages for students using Method 1...
A researcher compares the effectiveness of two different instructional methods for teaching anatomy. A sample of...
A researcher compares the effectiveness of two different instructional methods for teaching anatomy. A sample of 218 students using Method 1 produces a testing average of 58.7. A sample of 243 students using Method 2 produces a testing average of 54.7. Assume that the population standard deviation for Method 1 is 18.63, while the population standard deviation for Method 2 is 16.17. Determine the 95% confidence interval for the true difference between testing averages for students using Method 1 and...
A researcher compares the effectiveness of two different instructional methods for teaching pharmacology. A sample of...
A researcher compares the effectiveness of two different instructional methods for teaching pharmacology. A sample of 51 students using Method 1 produces a testing average of 81.6. A sample of 76 students using Method 2 produces a testing average of 76.4. Assume that the population standard deviation for Method 1 is 12.24, while the population standard deviation for Method 2 is 11.19. Determine the 90% confidence interval for the true difference between testing averages for students using Method 1 and...
A researcher compares the effectiveness of two different instructional methods for teaching anatomy. A sample of...
A researcher compares the effectiveness of two different instructional methods for teaching anatomy. A sample of 59 students using Method 1 produces a testing average of 85.5. A sample of 31 students using Method 2 produces a testing average of 74.4. Assume that the population standard deviation for Method 1 is 19, while the population standard deviation for Method 2 is 7.55. Determine the 98% confidence interval for the true difference between testing averages for students using Method 1 and...
The resistance, R, of a resistor was determined by two different methods, A and B. For...
The resistance, R, of a resistor was determined by two different methods, A and B. For each method, the measurements were repeated 10 times. The results gave the following values for the mean and the standard error of the mean: method A, RA = (95 ± 8) Ω, method B, RB = (103 ± 2) Ω. It is clear that method B is more precise. How many more measurements are required for method A to be as precise as method...
11.Two analytical methods were used to determine the amount of dextromethorphan in Children's Dimetapp. Use the...
11.Two analytical methods were used to determine the amount of dextromethorphan in Children's Dimetapp. Use the F test and data in the table to determine if the standard deviations were significantly different or not, at 95% confidence level. Method A Method B Mean 492.7 mg.tsp 506.2 mg.tsp 0.28 10 0.16
Explain two different methods that can be used to measure the phase angle difference between two...
Explain two different methods that can be used to measure the phase angle difference between two sinusoidal functions with the same frequency using an oscilloscope.
38. In a physics experiment, two different methods were used to measure the angle of deflection when a subatomic particle collides with a certain material. Ten specimens of the material were used to compare the two methods, For each specimen, the angle of deflection was measured using both methods. For each specimen, the method used first was determined by the flip of a fair coin. The difference between the measured angles was calculated for each specimen. A test of the...
4. The Ti content (wt%) of two different ore samples was measured several times by the same method. The results for sample 1 were <x> = 0.013960 and si = 0.0003435 for five measurements and the results for sample 2 were <x2> 0.013400 and s2 = 0.0003937 for four measurements. Are the two results significantly different at the 95th confidence level?
A researcher compares the effectiveness of two different instructional methods for teaching electronics. A sample of 102 students using Method 1 produces a testing average of 76.4. A sample of 84 students using Method 2 produces a testing average of 62.7. Assume that the population standard deviation for Method 1 is 15.67, while the population standard deviation for Method 2 is 6.76. Determine the 80 % confidence interval for the true difference between testing averages for students using Method 1...
11.Two analytical methods were used to determine the amount of dextromethorphan in Children's Dimetapp. Use the F test and data in the table to determine if the standard deviations were significantly different or not, at 95% confidence level. Method A Method B Mean 492.7 mg.tsp 506.2 mg.tsp 0.28 10 0.16
Explain two different methods that can be used to measure the phase angle difference between two sinusoidal functions with the same frequency using an oscilloscope.
Most questions answered within 3 hours.
-
lease solve all the
questions, don't need to explanations
Q1 - All animal
species have general...
asked 8 minutes ago -
Business Phasing
1.Discuss the logical progression for growing a business, which
starts from the initial idea...
asked 14 minutes ago -
Modify
When executing on the command line having only
this program name, the program will accept...
asked 1 hour ago -
Kenny Electric Company's noncallable bonds were issued several
years ago and now have 20 years to...
asked 1 hour ago -
find H(e^Jtheta) at theta= 0, pi/10, pi/20, pi/2 for
the following:
a) H(e^Jtheta)= 1+e^Jtheta
b) H(e^Jtheta)=...
asked 2 hours ago -
Home Corporation will open a new store on January 1. Based on
experience from its other...
asked 2 hours ago -
In a neoclassical model, use the IS-LM to analyze the effect of
a permanent money supply...
asked 3 hours ago -
An electron passes through a point 2.67 cm from a long straight
wire as it moves...
asked 3 hours ago -
A grammar is a 4-tuple G, G = (Ν, Σ, Π, Σ, S) where, Ν is...
asked 4 hours ago -
In this part, calculate the present values. Use the Excel PV
function to compute the present...
asked 4 hours ago -
Part 1. Primitive Types, Sorting, Recursion for
Homework.java
a) Implement the static method initializeArray that receives...
asked 5 hours ago -
Using C++, build a sorter that can rank a sequence of numbers in
a descending order....
asked 5 hours ago