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)
Answer:
76.39
Step-by-step explanation:
$4=76.39 paysos
Answer:
- 5/6
Step-by-step explanation:
turn it into an improper fraction.
1 and 2/3 = 5/3
2 and 1/2 = 5/2
5/3 - 5/2 = 10/6 - 15/6
= -5/6
Answer:
9 feet
Step-by-step explanation:
Answer:
<em>m</em> = 6
<em>c</em> = 0
General Formulas and Concepts:
<u>Algebra I</u>
Slope-Intercept Form: y = mx + c
- m - slope
- c - y-intercept
Step-by-step explanation:
<u>Step 1: Define</u>
y = 6x
↓ Compare to Slope-Intercept Form
Slope <em>m</em> = 6
y-intercept <em>c</em> = 0
