TRUE or FALSE
(a) In a scatterplot, the response is shown on the horizontal axis with the explanatory variable
on the vertical axis.
(b) If all of the data lie along a single line with nonzero slope, then the r
2 of the regression is
1. (Assume the values of the explanatory variable are not identical).
(c) If the correlation between the explanatory variable and the response is zero, then the slope
will also be zero.
(d) The use of a linear equation to describe the assocation between price and sales implies
that we expect equal differences in sales when comparing periods with prices $10 and $11
and periods with prices $20 and $21.
(e) The linear equation (estimated from a sequence of daily observerations):
Estimated shipments = b0 + 0.9*(Orders Processed) implies that we expect twice as many
shipments when the number of orders processed doubles only if b0 = 0.
(f) The intercept estimates how much the response changes on average with changes in the
predictor.

I'll do parts (a) through (c) to get you started

(a) False. The explanatory variable is always along the x axis, and the response variable is along the y axis. The response variable reacts to whatever the input explanatory variable is, hence the name "response".

---------

(b) True. If all data lie along a single straight line with nonzero slope, then either r = -1 or r = 1. If we have all data points on a line with some negative slope, then r = -1. If the regression slope is positive, then r = 1. Either way, it will lead to r^2 = 1 because (1)^2 = 1 and (-1)^2 = 1. In other words, there are two solutions to r^2 = 1 and they are r = -1 or r = 1. In the case of r = -1, we say the data has perfect negative linear correlation. With r = 1, the data has perfect positive linear correlation.

---------

(c) True. If r > 0, then we have some level of positive correlation which means the regression slope is positive in some way. If r < 0, then the regression slope is negative in some way. That must mean r = 0 leads to the regression slope having a flat horizontal line. This could mean one of two things: i) The points are all on or near the same curve such as a parabola, ii) The points are completely randomly scattered about. If case (i) happens, then it's better to use nonlinear regression instead of linear regression.

Use the function b = 14j + 12 to find the value of b when j = 3.

A building has three elevators. Each elevator is out of order 10% of the time.
The following set of random numbers represents 20 simulations of the
elevators, with 0 representing a broken elevator and 1,2,3,4,5,6,7,8, and 9
representing a working elevator. In how many of the simulations were all
three elevators working?

Find the mean for the following set of data. Write the NUMBER ONLY for the answer.

25, 27, 30, 15, 18, 24, 15

Landon earns 10% commission on his total sales. What must be his total sales in oder to earn a commission of $ 145?

HURRY! What value of m completed the two-way table?

A pole that is 12 feet tall casts a shadow that is 9 feet long. At the same time of day, how long is the shadow cast by a tree that is 45 feet tall?
A. 27 ft
B. 29.25 ft
C. 31.5 ft
D. 33.75 ft

Re-write the quadratic function belbw in Standard Form
y = 3(x - 3)(x - 2)

What is the mode for the following set of data?
5, 7, 9, 11, 13, 13

A. 8
B. 9.7
C. 10
D. 13

3. How many different ways can the letters in the word grade be arranged?

PLEASEEEE HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

[tex]\huge\mathfrak\red{solve \: please..} \\ \\ \huge\mathcal\purple{ {2}^{2} + 3 {}^{2} = {?} } \\ \\ \huge\mathfrak\green{asap \: \: ..thanks.}[/tex]
​

An ice-cream wafer cone has a diameter of 1.9 inches and a height of 7.4 inches.
What measurement is closest to the volume of the Ice-cream cone?

20.98 in.
83.92 in.)
27.97 in.
6.99 in.3

Marulla's z score on a college entrance exam is 1.3. If the raw scores have a mean of 480 and a standard deviation of 70 points, what is her raw score?

Use the combination formula to solve a problem when n = 6 and r = 4.



A. 60
B. 45
C. 30
D. 15

EASY MATH PLEASE HELP!! : ) : )

NO LINKS PLEASE

EXPLANATION REQUIRED


A new school is ordering math textbooks. They are 3/4 of an inch thick. How many of these books will fit into a bookshelf that is 2 feet long?

A) 2 books

B) 12 books

C) 26 books

D) 32 books

I need help on this do any of y’all know this

The number of miles a car travels varies directly with the number of gallons of gas in its tank of a car with 20 gallons of gas can drive 560 miles which equation represents the number of miles an

The sun is currently at a 35-degree angle above the horizon. A tree casts a 32-foot shadow. How tall is the tree?

Help out



Sishsbnxbxbxxnxj

Could someone please help me with the surface area of this rectangle pyramid

if a normal distribution has a mean of 154 and a standard deviation of 15, what is the value that has a z-score of 3.6?

plz help i have been asking this question way too much

Explain in your words what the coefficient of friction represents in the context of
project. What might the coefficient be for an icy road? Explain your answer

Malcom is filling bags with rice. He starts with 5 1/4 lbs. container of rice and fills each bag with 5/8 pound of rice. How many bags can Malcom fill?

insert six rational number between 3/5 and 2/3

please help i need to get out of recovery mode so i can do 20 other assignments including a final exam

what is the point of intersection of the x-axis and the y-axis called

a xcoordinate

b origin

c y-coordinates

d quadrant

What side of the image corresponds to DE?

Add t to 2 then add 4 to the result

A computer can perform 4.66 x 10 exponent 8 calculations per second. How many calculations can this computer perform in one minute