By formula we know that:
z (x) = (x - m) / [sd / sqrt (n)]
where x is the value we want to know (6.7), m is the mean (5), sd is the standard deviation (7.1) and n is the sample size (29).
Replacing we have:
z (6.7) = (6.7 - 5) / [7.1 / sqrt (29)]
z = 1.289
If we look in the normal distribution table (attached), we have that the probability is 0.8997, therefore:
1 - 0.8897 = 0.1003
So the conditional probability of a herd sample earning at least 6.7 pounds per steer is 10.03%.
Now the hypothesis tells me:
m> 5
The probability is somewhat low, therefore, the most correct thing is to reject the hypothesis even though it is a fact that can occur.
Answer:
perimeter of triangle=48 units.
area of triangle=96cm²
Answer:
$25
Step-by-step explanation:
Cost = 30 x months + 25
Every month you will pay 30$
At 0 months when you sign up substitute m=0
Cost = 30x 0 +25 = 0 +25 =25
Answer:
all but the fourth option
Step-by-step explanation:
pre-calc edg 2020
Check the picture below.
a rhombus has a few features, the diagonals meet at right-angles, that means angle 1 is clearly a right-angle.
because the rhombus is just a slanted square, namely, even though it's slanted, the sides are all equal in length, and because of that, the angles on the 2 locations, will be smaller than the angles at the 3 locations.
since the rhombus has 4 congruent triangles, we can check any of those, keeping in mind that the sum of their interior angles must be 180°. So whatever ∡2 and ∡3 are, they must add up to 90, and ∡2 being the smaller one.
so 90° and 41° and 49°, gives us 90 + 41 + 49 = 180.
