Answer:
6.28
Step-by-step explanation:
I was gonna answer but I’m not sure and I don’t want u to get it wrong so I’m just not gonna tell u sorry
a) For x = 27:
z = 27-28/2 = -0.5
For x = 31:
z = 31-38/2 = 1.5
From the normal distribution table, P(27 < x < 31) = P(-0.5 < z < 1.5) = P(z < 1.5) - P(z < -0.5) = 0.9332 - 0.3085 = 62.47%
b) For x > 30.2:
z = 30.2-28/2 = 1.1
From the normal distribution table, P(x > 30.2) = P(z > 1.1) = 1 - P(z > 1.1) = 1 - 0.8643 = 13.57%
Answer:
3484 
Step-by-step explanation:
a = bh
a = 67 x 52
a = 3484
155/10,000 divided by 5
31/2000 =0.0155
