Answer:
66.28% of students study more than 8 hours
Step-by-step explanation:
The percent of students study more than 8 hour can be calculated as
P(X>8)=?
P(X>8)=P((X-mean)/sd>(8-9.92)/4.54)
The calculated z-score is -0.42.
P(X>8)=P(Z>-0.42)
P(X>8)=P(0<Z<-0.42)+P(0<Z<∞)
P(X>8)=0.1628+0.5=0.6628.
Thus, 66.28% of students study more than 8 hours.
Answer:
you can't combine them
Step-by-step explanation:
Answer:
13(2+3)
Step-by-step explanation:
hope this is correct let me know if you need the steps!
Answer:
2120 milimeters
Step-by-step explanation:
to convert meters to milimeters, you need to multiply your value by 1000, so in this case 2.12x 1000= 2120
Hope this helps
Answer:
If is positive, then the parabola opens upward, so the function decreases on and increases on . But if is negative, then just the reverse
