For married couples living in a certain locality, the probability that the husband will vote in a school board election is 0.21, the probability that they both will vote is 0.15. What is the probability that
i) at least one of them will vote?
ii) neither of them will vote?
Let (P(H)) be the probability that the husband votes, (P(W)) the probability that the wife votes, and (P(H \cap W)) the probability that both vote. We are given: [ P(H) = 0.21, \quad P(H \cap W) = 0.15 ] i) Probability that at least one of them will vote: The probability that at least _______ ______ _______ ________ _________ ______ _____ ___ _________ ____ ___.
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एक चर x का माध्य और मानक विचलन क्रमशः m और है।
, का माध्य और मानक विचलन ज्ञात कीजिए जबकि a, b और c अचर हैं।
b) यदि एक यादृच्छिक चर X इस प्रकार है कि और
है, तो P(-2 < X < 8) का निम्न परिबंध ज्ञात कीजिए।
निम्नलिखित संयुक्त प्रायिकता घनत्व फलन लीजिए :
क्या दोनों x और y समाश्रयण रैखिक हैं? अपने उत्तर का कारण दीजिए।
The mean I.Q. of a large number of children of age 14 was 100 and standard deviation 16. Assuming that the distribution was normal, findi) the percentage of children having I.Q. under 80.
ii) the limits in which the I.Q. of the middle 40% of the children will lie.You may like to use the following values:
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