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The average time spent in a week by grade 11 students browsing their favorite social networking sites is 12 hours with a standard deviation of 3 hours. If a random sampling of 40 students is selected, find the mean, variance, and standard error of the distribution of all sample means that can be derived from the sample.
The following are the age of 8 jeepney passengers in a waiting shed: 12, 15, 18, 19, 21, 23, 35, and 40. A sample with size 7 is chosen to ride in the current jeepney. Find the standard error of the sample mean.
The average weight of 52 senior high school students is 50 kg with a standard deviation of 2.5 kg. If 25 students are randomly selected, find the mean, standard deviation, and variance of the corresponding sampling distribution of sample means.
Calculate the linear expansivity or brass or length 170m,that assumes new length of 120.05m when heated through the temperature of 100⁰c
Calculate also the area and heated expansivity
Which parameter should be removed from this line, that strives to overload the * operator? Type the parameter name only; don't list the type.
TimeHrMn TimeHrMn::operator*(TimeHrMn lhs, TimeHrMn rhs) {
Which of the following sets of polynomials span P2 ?
a. {t²+1, t-1, t²+t}
B. {t²+ 2, 2t²- t+1, t + 2 , t²+t+4}
Let V = set of all 3x1 matrices.
Define
+ to be the matrix addition
⦁ to be the matrix multiplication by a number
We know that V is a vector space. If W [a, b, 1] , a, b element of R then W is a subspace of V.
Let V be the set of all positive real numbers; define + by u+v = uv (+ is ordinary multiplication) and define • by c•v = . Prove that V is a vector space.
An object has a launch velocity of 30.0 m/s at launch angle of 30.00 relative to horizontal. Find the a) x and y component of initial velocity, b) time to reach the peak c) total time of flight, d) vertical height to reach the peak, and e) horizontal distance.
A projectile has an initial launch speed of 18.0 m/s. If it is desired that it strikes a target 31.0 m away at the same elevation, what should be the projection angle?
#339914 on Dec 2023