Answer:
Step-by-step explanation:
35 49 51 54 65 51 52 47 87 37 46 33 39 44 39 64 94 34 30 48
is the sample given
From the above we can find
Mean =sum of all observations /20
= 
Variance = ![\frac{1}{20} [\Sigma_1^{20} (x_i-49.95)^2 ]\\=269.7475](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B20%7D%20%5B%5CSigma_1%5E%7B20%7D%20%28x_i-49.95%29%5E2%20%5D%5C%5C%3D269.7475)
Std deviation= square root of variance
= 16.424
Population estimate for mean = 49.95
Population estimate for std dev =
=3.673
The value that separate 50% top form 50% bottom is the median
Median is the middle value after arranging in ascending order
=average of 47 and 48 = 47.5
Proportion of atleast 60 = 2/20 = 0.1
A plane because it is a flat surface from the top and a plane is too
Answer:
16
Step-by-step explanation:
3/4 = 12/x
Since 3 × 4 = 12
[Apply the same number with the numerator and denominator]
4 × 4 = 16
x = 16
Answer:
256
Step-by-step explanation:
3200 x 0.08 = 256
An acute triangle is a triangle with<span> all three angles</span>acute<span> (less than 90°). An </span>obtuse triangle<span> is one with one </span>obtuse<span> angle (greater than 90°) and two </span>acute<span>angles. Since a </span>triangle's<span> angles must sum to 180°, no</span>triangle<span> can have more than one </span>obtuse<span> angle.</span>
