Answer:
c. A one-tailed t statistic
Step-by-step explanation:
firstly; sample size n < 30 we use a t-test
A t-test is necessary for small samples because their distributions are not normal.
Also One-tailed tests have more statistical power to detect an effect in one direction
Y = mx + c
slope = -3/4
y = -3/4 x + c
At (0, 3)
3 = -3/4 (0) + c
c = 3
y = -3/4x + 3
The equivalent expression of 25 - 64 are "a), b) and c)"
The given expression is:
25 - 64
To find, the equivalent expressions are:
a) 25 + 40x - 40x - 64
= 25 - 64, is the equivalent expression.
b) 25 + 13x - 13x - 64
= 25 - 64, is the equivalent expression.
c) (5 + 8)(5 - 8)
Using the algebraic identity,
(a + b)(a - b) =
=
= 25 - 64, is the equivalent expression.
d) ( + 13)( - 13)
Using the algebraic identity,
(a + b)(a - b) =
=
= - 169, is not a equivalent expression.
e)
Using the algebraic identity,
, is not a equivalent expression.
∴ The equivalent expression of 25 - 64 are "a), b) and c)".
