The mean and variance of a set of 15 numbers are 12 and 14 respectively. The mean and variance o.... VIDEO
The mean and variance of a set of 15 numbers are 12 and 14 respectively. The mean and variance of another set of 15 numbers are 14 and \(\sigma^2\) respectively. If the variance of all the 30 numbers in the two sets is 13 , then \(\sigma^2\) is equal to 📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live
Other Videos By PW Solutions 2024-07-17 Let the positive numbers \(a_1, a_2, a_3, a_4\) and \(a_5\) be in a G.P. Let their mean and vari.... 2024-07-17 Consider three observations \(a, b\) and \(c\) such that \(b=a+c\). If the standard deviation of.... 2024-07-17 Let sets \(A\) and \(B\) have 5 elements each. Let the mean of the elements in sets \(A\) and \(.... 2024-07-17 If the mean and variance of six observations \(7,10,11,15\), \(a, b\) are 10 and \(\frac{20}{3}\.... 2024-07-17 Let \(\mu\) be the mean and \(\sigma\) be the standard deviation of the distribution
where \(\s.... 2024-07-17 If the mean of the frequency distributionis 28 , then its variance is______________.... 2024-07-17 Let the mean and variance of 12 observations be \(\frac{9}{2}\) and 4 respectively. Later on, it.... 2024-07-17 Let the mean and variance of 8 numbers \(x, y, 10,12,6\), \(12,4,8\) be 9 and 9.25 respectively..... 2024-07-17 Let the mean of 6 observation \(1,2,4,5, x\) and \(y\) be 5 and their variance be 10 . Then thei.... 2024-07-17 If the mean and variance of the frequency distributionare 9 and 15.08 respectively, then the val.... 2024-07-17 The mean and variance of a set of 15 numbers are 12 and 14 respectively. The mean and variance o.... 2024-07-17 The mean and variance of the marks obtained by the students in a test are 10 and 4 respectively..... 2024-07-17 For the frequency distribution:Variate \((x): x_1 x_2 x_3 \ldots x_{15}\)Frequency \((f): f_1 f_.... 2024-07-17 On the basis of data given below predict which of the following gases shows least adsorption on .... 2024-07-17 Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Sharp glass edge becomes s.... 2024-07-17 Arrange the following gases in increasing order of vander Waal's constant ' a '.
(A) Ar(B) CH4(C.... 2024-07-17 Consider the following table:
a and b are vander waals constant. The correct statement about th.... 2024-07-17 A gas at \(350 \mathrm{~K}\) and 15 bar has molar volume 20 percent smaller than that for an ide.... 2024-07-17 A \(10.0 \mathrm{~L}\) flask contains 64 \(\mathrm{~g}\) of oxygen at \(27^{\circ} \mathrm{C}\)..... 2024-07-17 Assertion (A): Dipole-dipole interactions are the only noncovalent interactions, resulting in hy.... 2024-07-17 The pressure of a moist gas at 27°C is 4 atm. The volume of the container is doubled at the ....
0