Answer:
= ( 50.66, 57.34)
Step-by-step explanation:
Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.
The confidence interval of a statistical data can be written as.
x+/-zr/√n
Given that;
Mean x = 54 ounces
Standard deviation r = 11.7 ounces
Number of samples n = 49
Confidence interval = 95%
z(at 95% confidence) = 2
Substituting the values we have;
54+/-2(11.7/√49)
54+/-2(1.671428571428)
54+/-3.342857142857
54+/-3.34
= ( 50.66, 57.34)
Therefore, the 95% confidence interval (a,b)
= ( 50.66, 57.34)
Thanks
(15^18) / (15^3)
If the exponents you're dividing have the same base, you subtract them.
18 - 3 = 15
15^15
Step-by-step explanation:
a) here,
diametre = 19 cm
Area = ?
Now,
Area = pie d
= 22/7 *19
59.71 cm2
Therefore, area = 59.71 sq.cm.
b)
here,
Area = 1000 sq.cm
diametre = ?
Now ,
Area = pie d
1000 = 22/7 *d
7000 = 22 * d ( cross multiply between 7&1000)
7000/22 = d
318.18 = d
Therefore, diametre = 318.18 cm .
Answer:
A = 143.2
Step-by-step explanation:
A= πr² = π(6.75)² = 
× 45.5625 = 143.196 ≈143.2
Answer:
this statement is false.
Step-by-step explanation:
cancel equal terms
add the numbers (5+12) (2+14)
17=16
not true.
