4x+8y=40
0.8*8=6.4
4x+6.4=40
40-6.4=33.6
4x=33.6
33.6\4=8.4
X=8.4
Answer:
Sample range appears to be a biased estimator since it consistently underestimated the population range.
Step-by-step explanation:
The calculation of sample range appear to be a biased or unbiased estimator of population range is shown below:-
Sample range (x) Frequency (f) fx
9 1 9
14 1 14
15 2 30
16 1 16
17 4 68
18 2 36
19 1 19
20 3 60
21 5 105
22 2 44
23 1 23
24 2 48
25 4 100
26 4 104
27 2 54
28 4 112
29 3 87
30 1 30
31 5 155
32 2 64
Total 50 1,178
Mean sample range = ∑ fx ÷ ∑ f
= 1,178 ÷ 50
= 23.56
Therefore the sample range is not equal to population range that is
23.56 ≠ 32
Thus, Sample range appears to be biased estimator.
So, the correct option is A.
Answer:
46$
Step-by-step explanation:
20+20=40, 5% of 40=2, 42, +4, 46. (the 4 comes from the 10%)
Answer:
190 centimeters
Step-by-step explanation:
This is what we know:
100 cm = 1m
?cm = 1.9m
So solve for the centimeters by multiplying 1.9 by 100
100 x 1.9 = 190
So, 1.9 meters equals 190 centimeters.
Answer:
there is a 26 out of 52 of a chance
Step-by-step explanation: