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)
Tan B=x/3
3 x Tan 70 degrees
3x2.74 =8.22
X=8.22
Step-by-step explanation:
3/5 as a percent is 60% .......
Answer:
The required paint for a total of 
is approximate 6 gallons
Step-by-step explanation:
we know that
To find how much paint would I need to buy to paint the walls of all three bedrooms, calculate the area of all three bedrooms
<em>Master Bedroom</em>
The area is equal to
<em>2 Bedroom</em>
The area is equal to
<em>3 Bedroom</em>
The area is equal to
The total area is equal to
A=A1+A2+A3
Approximate one gallon of paint covers 250 square feet
so
Answer: i have a answer but it is not up there srry
Step-by-step explanation:
