Tsquare= Ksquare +Vsquare -2(K)(V) times cosT
Answer:
Jack has 28 cards.
Step-by-step explanation:
To double 14, multiply 14 times 2. 14x2=28
-4x+7x-14
3x-14>-18
3x>-4
X>-4/3
Isolate the y to one side so we get: y = 2x - 1
The slope of the line is 2.
Answer:
option (a) It will be closer to 30 than to 20
Step-by-step explanation:
Data provided in the question:
For sample 1:
n₁ = 10
variance, s₁² = 20
For sample 2:
n₂ = 15
variance, s₂² = 30
Now,
The pooled variance is calculated using the formula,

on substituting the given respective values, we get

or
= 26.0869
Hence,
the pooled variance will be closer to 30 than to 20
Therefore,
The correct answer is option (a) It will be closer to 30 than to 20