You back packed for a distance of 15.75 miles today. You back packed at an average speed of 1.26 miles per hour, how long did yo
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we are given
distance=6.7 furlongs
(a) In rods
we know that
we can multiply both sides by 6.7
..............Answer
(b) In chains
we know that
we can multiply both sides by 6.7
..............Answer
Solution :
Let x be student will be left handed
P = 0.09
Using the normal approximation to binomial distribution,
a). n = 108,
μ = np = 9.72
= 2.9741
Required probability,
P(x=8) = P(7.5 < x < 8.5)
Using z table,
= P(z<-0.41)-P(z<-0.75)
= 0.3409-0.2266
= 0.1143
b). P(x=12) = P(11.5 < x < 12.5)
Using z table,
= P(z< 0.94)-P(z< 0.60)
= 0.8294 - 0.7257
= 0.1006