Answer:
(364.595 ; 391.405)
Step-by-step explanation:
Given the sample data:
406, 385, 389, 383, 352, 379, 388, 343, 368, 387
Using calculator :
Sample mean, xbar = 378
Standard deviation, s = 18.74
Confidence interval :
Xbar ± Margin of error
Margin of Error = Tcritical * s/√n
TCritical at df = 24 ; 0.05 = 2.262
Margin of Error = 2.262 * 18.74/√10 = 13.405
Lower boundary = (378 - 13.405) = 364.595
Upper boundary = (378 + 13.405) = 391.405
(364.595 ; 391.405)
Answer: B. There are no integers that are whole numbers.
<u>Step-by-step explanation:</u>
A. Whole numbers are never irrational. TRUE
B. There are no integers that are whole numbers. FALSE!
There ARE integers that are whole numbers because Integers are positive and negative whole numbers.
C. There is only one whole number that is not a natural number. TRUE
Whole Numbers: 0, 1, 2, 3, ...
Natural Numbers: 1, 2, 3, ...
D. Natural numbers cannot be negative. TRUE
C^2 = 9^2 + 6^2
c^2 = 81 + 36
c^2 = 117
c = √117
c = 10.82
Answer:
X=-1
Step-by-step explanation:
It’ll probably look like this if so..