The following table provides a probability distribution for the random variable y. a. Compute E(y) (to 1 decimal). b. Compute Var(y) and a (to 2 decimals). Var(y) y 2 4 7 9 f(y) 0.20 0.20 0.30 0.30

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A: no.of parents=10 no.of teachers=15

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A: total number of male students =126 number of students who are left handed=17

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A: r12=0.77r13=0.72r23=0.52

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Q: Considering the data, 16,18,12,72,23,73,16,66,81 Calculate the median?

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A: X~N( μ , ?)   μ=20.2 , ?=5.4   Z-score =( x - μ )/?

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Q: Using standard normal table or Excel function find the given probability, Calculate P(Z>0.37

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A:

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Q: The doctors in Philippine General Hospital declares the probability that a covid-19 patient will…

A: sample size(n)=7 P=probability of success=0.90 q=1-p q=1-0.90=0.1