Answer: a = 1, 1r = 3, 0.4n = 7
Step-by-step explanation:
r= 3, 0.4n = 7, a1 = 1 : a = 1, n = 35/2, r = 3
Answer:
y=2.13
Step-by-step explanation:
cross multiply
0.8/1.8=y/4.8
4.8*0.8/1.8
3.84/1.8
y=2.13
Answer:
x =7
Step-by-step explanation:

You need to use the binomial probability formula:

where:
n = total number of events = 10
k = number of events we are testing = 6
p = probability of event happening = 0.5

= 210×0.015625×0.0625
= 0.205078
Hence, the probability of getting 6 boys out of 10 births is
p = 0.205.