Answer:
0.13093
Step-by-step explanation:
Give. That :
Population mean = 40% = 0.4
Sample size (n) = 64
Probability that more than 30 have computer at home
Mean = np = 64 * 0.4 = 25.6
Standard deviation = sqrt(n*p*(1-p)) = 3.919
P(x > 30)
USing the relation to obtain the standardized score (Z) :
Z = (x - m) / s
Z = (30 - 25.6) / 3.919 = 1.1227353
p(Z < 1.122) = 0.13093 ( Z probability calculator)
Answer:
a positive number
Step-by-step explanation:
-(-) = +
for example, -1 * -1 = 1
Answer:
X < -4
Step-by-step explanation:
You would subtract thd 10. Then divide the -5. Also, you need to remember to flip the sign when you divide by a negative.
Answer:
Step-by-step explanation:
