Answer:
x> 5
Step-by-step explanation:
x+1>6
Subtract 1 from each side
x+1-1>6-1
x> 5
Answer:
a and c
Step-by-step explanation:
The mileage that the supervisor will achieve that is within a z-score of 1.5 is; 23.6
<h3>How to find the z-score? </h3>
Formula for z-score in statistics is;
z = (x' - μ)/s
Where;
x' is sample mean
μ is population mean
s is sample standard deviation
We are given;
x' = 29
Standard deviation; s = 3.6
z = 1.5
Thus;
1.5 = (29 - μ)/3.6
μ = 29 - (1.5 × 3.6)
μ = 23.6
Read more about z-score at; brainly.com/question/25638875
Answer:
The probability that they are both male is 0.424 (3 d.p.)
Step-by-step explanation:
The first step is to find the probability of the first selection being male. This is calculated as number of male mice divided by total number of mice in the litter
Prob (1st male) = 8 ÷ 12 = 0.667
Next is to find the probability of the second selection also being male. Note that the question states that the first mice was selected without replacement. This means the first mouse taken results in a reduction in both the number of male mice and total number of mice in the litter.
Prob (2nd male) = (8 - 1) ÷ (12 - 1) = 7/11 = 0.636
Therefore,
Prob (1st male & 2nd male) = 0.667 × 0.636 = 0.424
