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help! finding point-count in ecology
p0int-Count IT r:20 Counts on Sample Plots: (Fixed Area) Point Counts...
R codeing simulation For n = 20, simulate a random sample of size n from N(µ, 2 2 ), where µ = 1....
R codeing simulation
For n = 20, simulate a random
sample of size n from N(µ, 2 2 ), where µ = 1. Note that we just
use µ = 1 to generate the random sample. In the problem below, µ is
an unknown parameter. Plot in different figures: (a) the likelihood
function of µ, (b) the log likelihood function of µ. Mark in both
plots the maximum likelihood estimate of µ from the generated
random sample
(2) For n-20,...
Help please :) 1. The CD4 T cell counts (x10 /I) at baseline for a sample...
Help please :)
1. The CD4 T cell counts (x10 /I) at baseline for a sample of 13 patients follows. 230 205 313 207 227 245 173 58 103 181 105 301 169 a) (10 pts) Draw a boxplot of the data and comment on the skewness of the distribution. b) (5 pts) Determine a point estimate for the population mean CD4 T cell count. c) (10 pts) Determine a 90% confidence interval for the population mean CD4 T cell...
Please help with the R code! Thanks! Assume that your data consists of x1, . ....
Please help with the R code! Thanks!
Assume that your data consists of x1, . . , strap sample, we sample with replacement of these n points to obtain a set of IID new points Xi,... , X" such tha , Tn, n values. When we generate the boot- for each l. This new dataset, X* , X*, is called a bootstrap sample (a) (1 pt) Show that the bootstrap sample is an IID random sample from Fn, where TI...
Please answer this question using R 20. Let X1, X2, ..., X12 be a random sample...
Please answer this question using R
20. Let X1, X2, ..., X12 be a random sample from a Bernoulli distribution with unknown success probability p. We will test Ho: p = 0.3 versus Ha: p < 0.3, rejecting the null if the number of successes, Y = Dizi Xi, is 0 or 1. (a) Find the probability of a Type I error. (b) If the alternative is true, find an expression for the power, 1 – B, as a function...
HI I trying to understand better the plots below. Only have small sample size of 21 observation i...
HI I trying to understand better the plots below.
Only have small sample size of 21 observation in data using. I
not see anything drastic maybe but for thick tail in qqplot
Does this mean that linear model should not be use? Many
thank.
I trying to better interpret these question, and really want to
understand.
Please could you give feedback. Thankyou
Residuals vs Fitted Normal Q-Q 20◇ 2.5 3.0 3.5 4.0 4.5 -2 Fitted values Theoretical Quantiles Leverage plot...
The circular disk of radius r = 0.12 m rotates about a fixed axis through point...
The circular disk of radius r
= 0.12 m rotates about a fixed axis through point O with the
angular properties ? = 2 rad/s and ? = 3 rad/s2 with directions as
shown in the figure above. Using the cartesian coordinate system
centred at O, find in terms of i and j components,
(Problem 5/1 from Meriam and Kraige Dynamics) 1" 4 The circular disk of radius r = 0.12 m rotates about a fixed axis through point O...
Problem:2 Let Xi, X2,... , Xn be a random sample from Bernoulli(p) and consider es- timators...
Problem:2 Let Xi, X2,... , Xn be a random sample from Bernoulli(p) and consider es- timators iand p2- i. Compute the mean square error (MSEp) for both estimators p? and p2 Note that you must show the details of the calculation to receive full credit. ii. Use R to plot MSE, for both estimators using sample sizes n 20 and n- 300. Comment on the plots. iii. Use R to simulate 10,000 different Bernoulli samples of n 300 with success...
Character Count Write a program that reads a file and counts the number of occurrences of...
Character Count Write a program that reads a file and counts the number of occurrences of each character in the file (case sensitive). The file name is "char.txt". You should use a dictionary to hold the number of occurrences of each character, and print out that dictionary. For example, if the file contains only six characters, "tactic", your dictionary should contain the following key-value pairs (order can be different): {'a': 1, 'c': 2, 'i': 1, 't': 2} Sample Input: Follow...
Due on Saturday, Oct 20 at 11:59 pm (PDT 2 homework point(s) Quantum Numbers- -Valence Electrons--Orbitals...
Due on Saturday, Oct 20 at 11:59 pm (PDT 2 homework point(s) Quantum Numbers- -Valence Electrons--Orbitals How many atomic orbitals are there in an f subshell What i s the maximum value of the secondary quantum number (0 allowed for atomic electrons with a principal quantum number n 37 In an atom, what is the maximum number of electrons that can have a principal quantum number 67 is the total number of d electrons in a single (ground state) K...
A cylindrical rod (L = 0.1) (r=7.5mm) is fixed on a wall. A point c lies...
A cylindrical rod (L = 0.1) (r=7.5mm) is fixed on a
wall. A point c lies on its radius an angle (theta =30 degrees)
from the positive Z axis.
1) Find the state of stress of a cubic element at
location c assuming its in plane stress. Transverse shear for the
circular crossection can be assumed to be tau = 4V/3A where V is
the shear load and A is the area.
2) Assume C is now a small crack...
R codeing simulation
For n = 20, simulate a random
sample of size n from N(µ, 2 2 ), where µ = 1. Note that we just
use µ = 1 to generate the random sample. In the problem below, µ is
an unknown parameter. Plot in different figures: (a) the likelihood
function of µ, (b) the log likelihood function of µ. Mark in both
plots the maximum likelihood estimate of µ from the generated
random sample
(2) For n-20,...
Help please :)
1. The CD4 T cell counts (x10 /I) at baseline for a sample of 13 patients follows. 230 205 313 207 227 245 173 58 103 181 105 301 169 a) (10 pts) Draw a boxplot of the data and comment on the skewness of the distribution. b) (5 pts) Determine a point estimate for the population mean CD4 T cell count. c) (10 pts) Determine a 90% confidence interval for the population mean CD4 T cell...
Please help with the R code! Thanks!
Assume that your data consists of x1, . . , strap sample, we sample with replacement of these n points to obtain a set of IID new points Xi,... , X" such tha , Tn, n values. When we generate the boot- for each l. This new dataset, X* , X*, is called a bootstrap sample (a) (1 pt) Show that the bootstrap sample is an IID random sample from Fn, where TI...
Please answer this question using R
20. Let X1, X2, ..., X12 be a random sample from a Bernoulli distribution with unknown success probability p. We will test Ho: p = 0.3 versus Ha: p < 0.3, rejecting the null if the number of successes, Y = Dizi Xi, is 0 or 1. (a) Find the probability of a Type I error. (b) If the alternative is true, find an expression for the power, 1 – B, as a function...
HI I trying to understand better the plots below.
Only have small sample size of 21 observation in data using. I
not see anything drastic maybe but for thick tail in qqplot
Does this mean that linear model should not be use? Many
thank.
I trying to better interpret these question, and really want to
understand.
Please could you give feedback. Thankyou
Residuals vs Fitted Normal Q-Q 20◇ 2.5 3.0 3.5 4.0 4.5 -2 Fitted values Theoretical Quantiles Leverage plot...
The circular disk of radius r
= 0.12 m rotates about a fixed axis through point O with the
angular properties ? = 2 rad/s and ? = 3 rad/s2 with directions as
shown in the figure above. Using the cartesian coordinate system
centred at O, find in terms of i and j components,
(Problem 5/1 from Meriam and Kraige Dynamics) 1" 4 The circular disk of radius r = 0.12 m rotates about a fixed axis through point O...
Problem:2 Let Xi, X2,... , Xn be a random sample from Bernoulli(p) and consider es- timators iand p2- i. Compute the mean square error (MSEp) for both estimators p? and p2 Note that you must show the details of the calculation to receive full credit. ii. Use R to plot MSE, for both estimators using sample sizes n 20 and n- 300. Comment on the plots. iii. Use R to simulate 10,000 different Bernoulli samples of n 300 with success...
Due on Saturday, Oct 20 at 11:59 pm (PDT 2 homework point(s) Quantum Numbers- -Valence Electrons--Orbitals How many atomic orbitals are there in an f subshell What i s the maximum value of the secondary quantum number (0 allowed for atomic electrons with a principal quantum number n 37 In an atom, what is the maximum number of electrons that can have a principal quantum number 67 is the total number of d electrons in a single (ground state) K...
A cylindrical rod (L = 0.1) (r=7.5mm) is fixed on a
wall. A point c lies on its radius an angle (theta =30 degrees)
from the positive Z axis.
1) Find the state of stress of a cubic element at
location c assuming its in plane stress. Transverse shear for the
circular crossection can be assumed to be tau = 4V/3A where V is
the shear load and A is the area.
2) Assume C is now a small crack...
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