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Determine whether the following vector field is solenoidal, irrotational or both
F= x^2.yi + xyzj - x^2.y^2.k
F= x^2.yi + xyzj - x^2.y^2.k
Evaluate: sin[cos^(-1)((-2)/7) ]
a. √53/7 b. (-√53)/7 c. (3√5)/7 d. (-3√5)/7 e. None of these
a. √53/7 b. (-√53)/7 c. (3√5)/7 d. (-3√5)/7 e. None of these
danielle and jim baraka have obtained a $70,000 mortgage loan at an annual interest rate of 8.00 percent for 30 years. what is the monthly payment, total amount paid, and the total interest?
Consider the following five data points:
x -1. 0 1 2 3
Y -1 1 2 4 5
a) use regression analysis to calculate by hand the estimated coefficients of the equation Y = B + aX
(b) compute the standard error and the t-statistics for the coefficient of determination of X
x -1. 0 1 2 3
Y -1 1 2 4 5
a) use regression analysis to calculate by hand the estimated coefficients of the equation Y = B + aX
(b) compute the standard error and the t-statistics for the coefficient of determination of X
Consider the following five data points:
x -1.0 0.0 1.0 2.0 3.0
Y -1.0 1.0 1.0 2.5 3.5
a. Use regression analysis to calculate by hand the estimated coefficients of the equation Y = B + aX.
b. Compute the coefficient of determination.
c. What is the predicted value of Y for X = 1.0? For X = 3.5?
x -1.0 0.0 1.0 2.0 3.0
Y -1.0 1.0 1.0 2.5 3.5
a. Use regression analysis to calculate by hand the estimated coefficients of the equation Y = B + aX.
b. Compute the coefficient of determination.
c. What is the predicted value of Y for X = 1.0? For X = 3.5?
You have 152 employees they are paid $10.40 per hour how much do you need to make in order to pay their wages for a year
Solve the differential Equation
d^2y/dx^2 +3dy/dx -10y=3x^2
d^2y/dx^2 +3dy/dx -10y=3x^2
The probability that a person over 60 years of age in a certain community drinks alcohol is 2/5 and the probability that a person over 60 years of age has heart disease is 2/15.The probability that a person over 60 years of age drinks alcohol and has heart disease is 1/16.Are "drinking alcohol" and "heart disease" independent events?
A training director wishes to find out whether a particular training programme increases the efficiency of the employees.He plans to take a random sample of employees and record their efficiency rating before the training starts.After the completion of the programme, the efficiency of the same sample of employees is recorded as given in the table below.At 0.05 level of significance do you reject or accept the null hypothesis H_0:μ_d=0 against H_1:μ_d>0 where μ_d=0 is mean of the difference?
Check whether or not the conicoid represented by 5x^2+4y^2-4yz+2xz+2x-4y-8z+2=0 is central or not.If it is,transform the equation by shifting the origin to the centre.Else,change any one coefficient to make the equation that of a central conicoid.
