Answer: 76
Step-by-step explanation: 19*8/2
Answer:
3/2
Step-by-step explanation:
-3/8÷-1/4
=-3/8×-4 (Reciprocal)
=1.5
Growth 2.63 2.57 2.67 2.50 2.47 2.38 2.25
Required:
a. Find the mean and standard deviation of both sea surface temperature x and growth y and the correlation r between x and y.
b. Find the least-squares line. The result should agree with your work in part (a) up to roundoff error. (Round your answers to three decimal places.)
c. Say in words what the numerical value of the slope tells you.
Answer:
Kindly check explanation
Step-by-step explanation:
Given the following :
Sea Surface Temperature (x) : 29.69 29.87 30.16 30.22 30.48 30.65 30.80
Growth : (y) 2.63 2.57 2.67 2.50 2.47 2.38 2.25
Mean (x) :
Σ(X) / n
n = number of observations
Mean (m1) = Σ(X) / n = 211.87 / 7 = 30.27
Standard deviation(sx) = 0.3742 (using calculator)
Mean (m2) :
Σ(y) / n = 17.47 / 7 = 2.50
Standard deviation(sy) = 0.1354 ( using calculator)
Correlation (r) :
(1/n)Σ[(x - m1) / sx] × [(y - m2) /sy]
Using calculator to save computing time :
r = - 0.8642
b. Find the least-squares line. The result should agree with your work in part (a) up to roundoff error. (Round your answers to three decimal places.)
The least square line using the regression calculator :
y = -0.31 + 11.96x
Comparing to the regression equation format :
y = mx + c
Where ;
-0.31 = intercept ; 11.96 = slope ; x = independent variable ; y = dependent variable
c. Say in words what the numerical value of the slope tells you.
For every 1° degree rise in surface temperature, growth increases by 11.96
The answer is 2^4 + 2 - 3 ^ 9 / 3^ 8 + 3
28x3=84
84-27-25=32
That is my solution.
Correct answer
Answer:
A, 38, 40
Step-by-step explanation:
a. A has to be the first graph because it starts at $ 25 and it rises as more work needs to get done
b.if you go from 50 up until you get to the line, then look left at the axis is about $38
c. C=25+s*0.25, substitute c=35 and find s
35=25+s*0.25 subtreact 25 from both sides
35-25= s*0.25
10=s*0.25 divide both sides by 0.25
10/0.25=s
40=s