Given mean μ = 7.6 and standard deviation σ =3.1
The z score value for x= 5 is given by
Z = 
Z = 
Z = -0.8387
The Z- score value rounded to nearest tenth is -0.8
The correct answer choice is A. -0.8
Answer:
it would be 125 miles.
Step-by-step explanation:
3 miles a minute for 40 minutes would be 40 x 3 which equals 120.
add the 5 miles going to the store would be 125.
I THINK I DID IT IM SO PROUD RN.
= 3 - 3cos x - 2(1- cos^2 x)
= 2cos^2 x - 3cos x + 1
=(cos x -1)(cosx - 1/2)
now cos x = 1 or cos x= 1/2
draw a graph we get = + ve values
hence .. 0 ,180,360 and 60,240, degrees in range x<2pi
Answer:
38x + 38
Step-by-step explanation:
Answer:
(27.3692 ; 44.6308)
Step-by-step explanation:
Mean, xbar = 36
Standard deviation, s = 11
Sample size, n = 12
Tcritical at 0.2, df = 12 - 1 = 11 ; Tcritical = 2.718
Confidence interval :
Xbar ± Margin of error
Margin of Error = Tcritical * s/sqrt(n)
Margin of Error = 2.718 * 11/sqrt(12) = 8.6308
Confidence interval :
Lower boundary : 36 - 8.6308 = 27.3692
Upper boundary : 36 + 8.6308 = 44.6308
(27.3692 ; 44.6308)
