Answer:
(230.21 ; 233.13)
Step-by-step explanation:
Given the data :
230.66, 233.05, 232.58, 229.48, 232.58
To calculate the 90% CI
WE obtain the mean and standard deviation of the sample data :
Mean of sample, ΣX /n = 1158.35/5 = 231.67
The standard deviation of the sample, s = 1.531 (Using calculator).
(The 90% Tcritical value, 2 sided, df = 4) = 2.132
The confidence interval, CI :
Mean ± Tcritical * s/√n
C.I = 231.67 ± (2.132 * (1.531/√5)
C. I = 231.67 ± 1.4597
(231.67 - 1.4597) ; (231.67 + 1.4597)
(230.21 ; 233.13)
<h3>
Answer:</h3>
60%
<h3>
Step-by-step explanation:</h3>
The percent change can be found from ...
... ((new value)/(old value) -1) × 100%
... (1520/950 -1) × 100% . . . . . . filling in your numbers
... (1.6 - 1) × 100% = 60% . . . . . . simplify
Attendance this year was 60% higher than last year.
Step-by-step explanation:
If x=20 3x/5=12
Then if y=30 3y/5=18
It shows that A'B'C' smaller than ABC
Answer:
x = y² + 12x
y² = x - 12
y² = -11x.
Step-by-step explanation:
We need to find the inverse of the given function , which is ,
Step 1 : <u>Interchange</u><u> </u><u>x </u><u>and </u><u>y </u><u>:</u><u>-</u><u> </u>
But according to the steps given in the Question , in very first step in 12x , x is not replaced by y . After which , the steps go wrong in the question .
<u>The </u><u>3 </u><u>errors </u><u>:</u><u>-</u><u> </u>
- x = y² + 12x
- y² = x - 12
- y² = -11x.
Answer: 2.8 hours (equivalent to 2 hrs, 48 min)
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Work Shown:
Multiply 0.35 by 8 and you'll get 2.8, which breaks down as follows
2.8 hrs = (2 hrs) + (0.8 hrs)
2.8 hrs = (2 hrs) + (0.8 hrs)*(60 min/1 hr)
2.8 hrs = (2 hrs) + (0.8*60 min)
2.8 hrs = (2 hrs) + (48 min)
2.8 hrs = 2 hrs, 48 min