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Recursos para tareas escolares en Pakistán

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Preguntas

Pakistan
The surface area of a cube of side 2 cm long is
Geometría Jan 22, 2025
The perimeter of a square is 2 km . How long is each side of the square?
Geometría Jan 22, 2025
The area of a parallelogram is \( 42 \mathrm{~cm}^{2} \). Its base is 6 cm . What is height?
Geometría Jan 22, 2025
The sum of lengths of all sides of a closed plane figure is called \( \begin{array}{llll}\text { (a) area } & \text { (b) perimeter } & \text { (c) volume } & \text { (d) length }\end{array} \) A string 16 cm long is used to form a square. The length of side the square is \( \begin{array}{llll}\text { (a) } 4 \mathrm{~cm} & \text { (b) } 6 \mathrm{~cm} & \text { (c) } 3 \mathrm{~cm} & \text { (d) } 48 \mathrm{~cm}\end{array} \)
Geometría Jan 22, 2025
2. Answer the following questions. A random variable \( X \) has a mean 8 , a variance 9 , and an unknown probability distribution. Using Chebyshev's theorem, find the lower bound of \( P(|X-8| \geq 6) \).
Probability Jan 22, 2025
11. Prove that the product of \( n \) geometric means between \( a \) and \( b \) to the nth power of the single geometric mean between them. For what value of \( n, \frac{a^{n+1}+b^{n+1}}{a^{n}+b^{n}} \) is the geometric mean betweo iw?
Álgebra Jan 22, 2025
"Statistics". Acoin is flipped until 3 heads in succession occur. List only those elements of the sample space that require 6 or less tosses. Is this a discrete sample space? Explain.
Estadísticas Jan 22, 2025
4. Discuss the difference and the relationship between "Probability" and "Statistics". 5. A coin is flipped until 3 heads in succession occur. List only those elements of
Probability Jan 22, 2025
product chosen is defective? If X is a continuous random variable having the following probability density function: \[ f(x)=\left\{\begin{array}{ll}2(x-1), & 1<x<2 \\ 0, & \text { elsewhere. }\end{array}\right. \] Then find out the variance of X .
Probability Jan 22, 2025
12. Company A produces \( 10 \% \) defective products, Company B produces \( 20 \% \) defective products and C produces \( 5 \% \) defective products. If choosing a company is an equally likely event, then what is the probability that the product chosen is defective?
Probability Jan 22, 2025
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