Ratio propion des >
2 x
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© Natasha and Richard are marking exam papers. Each set takes Natasha 45
minutes and Richard 1 hour. Express the times Natasha and Richard take as a
ratio.
Give your answer in its simplest form.

An assembly consists of two mechanical components. suppose that the probabilities that the first and second components meet specifications are 0.87 and 0.84. assume that the components are independent. determine the probability mass function of the number of components in the assembly that meet specifications. x

Someone me! if you’re smart you can solve this!

Indicate the formula for the following conditions: p^c(n,r)=