Answer:
The answer is D or A
Step-by-step explanation:
Answer:
37
Step-by-step explanation:
Here, we have two different samples, hence, to obtain the confidence interval, we use the relation for the confidence interval for two sample means ;
(x1 - x2) ± Margin of error
Where, (x1 - x2) = point estimate of the sample mean, this is the difference in mean of the two samples.
From the question ;
x1 = 1150 ; x2 = 1113
Hence, the point estimate is : (1150 - 1113) = 37
Step-by-step explanation:
I think you mean triangle XYZ. and angle XYZ.
so, the angle at Y is 90°.
that makes XZ the Hypotenuse (baseline opposite of the 90° angle) of the right-angled triangle.
so, we can actually use Pythagoras (we don't need the area of the triangle to solve) :
13² = 12² + YZ²
169 = 144 + YZ²
25 = YZ²
YZ = 5 cm
just to check - the area of this triangle is (remember, it is a right-angled triangle, so XY and YZ serve also as baseline and height) :
area = 12 × 5 / 2 = 60/2 = 30 cm²
correct, it fits.
Answer:
a. 0.0056
b. 0.0846
c. 0.0255
d. 0.8487
Step-by-step explanation:
The missing question for the binomial distribution problem is to find the probability of:
a. Fewer than 4
b. Fewer than 6
c. Fewer than 5
d. Fewer than 10
The step by step solution is attached as an image.
The base, 1.74, represents 100% of the original number of hits plus the percent increase, 0.74=74%, daily.
