Your answer is A hope this helps
Answer:
A) probability that at least x of them will require repairs is less than 0.5 is 4
Step-by-step explanation:
sample size, n = 20
p = success probability of toaster = 0.2
q = failure probability of toaster =1- p = 1- 0.2 =0.8
mean, , μ = n * p = 20 * 0.2 = 4
standard deviation, 
a) the probability that at least some of them require repairs < 0.5.
for
value of z = 0
we know 
from z table
X = 4
B) SECOND PART IS INCOMPLETE { DATA IS INCOMPLETE}
9514 1404 393
Answer:
1/4
Step-by-step explanation:
Put the value where the variable is and do the arithmetic.
3z² = 3(√3/6)² = 3(3/6²) = 9/36 = 1/4
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The whole point of √3 is that the square of it is 3. The square of a fraction is the fraction multiplied by itself. The usual rules of multiplying fractions apply.
Answer:
it's a
Step-by-step explanation:
use desmos, if you can :)
Answer:
4
Step-by-step explanation:
all you have to do is divide 12 by 3