The correct answer is b, x < -3.
Since the area shaded is left of x = -3, x has to be less than -3.
The answer is D. Most students are young enough not to have much of a credit score or credit history...
15*4= 60 (60 students in total)
180/60= 3 (180 book covers divided among 60 students)
Each student gets 3 covers.<span />
Answer: Option 'b' is correct.
Step-by-step explanation:
Since we have given that
s = 0.81
n = 31
We need to find the 93% confidence interval to estimate the true standard deviation.
degrees of freedom = df = n-1=30
Here, α = 0.93
1-α=0.07
so,
and
So, we will use "Chi square distribution"
So, the interval would be
Hence, 93% confidence interval would be (0.6581,1.058).
Therefore, Option 'b' is correct.