Answer:
Step-by-step explanation:
Given that each of 165 newly manufactured items is examined and the number of scratches per item is recorded (the items are supposed to be free of scratches), yielding the following data
x freq x*f x^2*f
0 25 0 0
1 34 34 34
2 37 74 148
3 29 87 261
4 19 76 304
5 8 40 200
6 8 48 288
7 5 35 245
165 394 1480
Mean 2.387878788 8.96969697
Variance 3.267731864
We get E(x) = 2.388 and hence unbiased estimator of mu is 2.388
b) Variance = 3.268
━━━━━━━☆☆━━━━━━━
▹ Answer
<em>(-1, 1) (-2, 2) (-3, 3)</em>
▹ Step-by-Step Explanation
You can use a graphing calculator to find the points. Attached is an image.
Hope this helps!
- CloutAnswers ❁
!
━━━━━━━☆☆━━━━━━━
Step-by-step explanation:
log 25 + log 8 = log (25 × 8) = log 200
log 200 - log 2 = log (200 ÷ 2) = log 100
logarithm base 10 of 100 is 2.
73.14 $ knowing that the tax would be 4.14$, added to 69$ would be 73.14$
