Answer:
131.2 ;
12.8 ;
(118.4, 144)
Step-by-step explanation:
Given :
X = 131.2, s=55 , and n= 50
Point estimate of the mean :
Since, sample size is large (n > 30) ; the sample mean = population mean according to the center limit theorem :
Margin of Error = Zcritical * s / sqrt(n)
Zcritical at 90% = 1.645
Margin of Error : 1.645 * (55 / sqrt(50))
Margin of Error : 1.645 * 7.7781745
Margin of Error = 12.795097
Margin of Error = 12.8
The confidence interval (C.I) :
C.I = x ± margin of error
C. I = 131.2 ± 12.8
(131.2 - 12.8) ; (131.2 + 12.8)
(118.4, 144)
I think the answer to your question
is the last question meaning you add the number up to equal 13.1 and add on the negative so they both equal -13.1
Answer:
29/3
Step-by-step explanation:
Multiply and simplify
58/6=29/3
Answer:
1. Decimal
2.The initial amount of money
3. Interest
Step-by-step explanation:
1. Convert to a decimal before any thing else
2. Is the money you are putting in the bank
3. it stands for Interest
Answer:
a(n) = -26+(200n-200)
Step-by-step explanation:
The formula for arithmetic series is "Tn=a+(n-1)d
Then,the elements in the formula are substituted with numbers.i.e Tn= -26+(n-1)200.
therefore,Tn= -26+(200n-200)...
Nb: This answer is Subjected to review, thanks.
