Answer: 31 is a prime number because only 1 times itself equals 31. no other two factors equal 31 as a product.
Step-by-step explanation:
Answer:
y = 2.5x
Step-by-step explanation:
y = mx + b
m=2.5 (slope) --> y=2.5x+b
coordinate : (2,5) 2 is the x coordinate, 5 is the y coordinate
to Find b, input the coordinate --> 5 = 2.5(2) + b
5 = 5 + b
0=b
y= 2.5x
This is only since it asked to solve using the point. If you look at the graph, the line intercepts the y-axis at (0,0) so b=0.
hope this helps
Answer:
[ 17.8941, 19.6621]
Step-by-step explanation:
Given:
widths :
18.41 19.11 18.67 18.97 21.97 17.26 18.69 16.73 21.97 16.43 21.97 21.66 18.77 17.93 15.47 16.44
Total number of observations = 16
Mean of the sample = 
= 
= 18.7781
For 90% confidence level, z value = 1.645
Therefore,
Margin of error, E = 
= 
= 0.884
thus,
Confidence interval = Mean ± E
or
Confidence interval = [18.7781 - 0.884 , 18.7781 + 0.884 ]
= [ 17.8941, 19.6621]
Answer:
Events A and B are independent if and only if P(A and B) = P(A)P(B). If you know these probabilities, you can check to see if this holds.
Step-by-step explanation:
:)
