Answer: = ( 63.9, 66.7)
Therefore at 90% confidence interval (a,b)= ( 63.9, 66.7)
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 = 65.3
Standard deviation r = 5.2
Number of samples n = 36
Confidence interval = 90%
z(at 90% confidence) = 1.645
Substituting the values we have;
65.3 +/-1.645(5.2/√36)
65.3 +/-1.645(0.86667)
65.3+/- 1.4257
65.3+/- 1.4
= ( 63.9, 66.7)
Therefore at 90% confidence interval (a,b)= ( 63.9, 66.7)
The diameter is the cross section of the widest part of a sphere.
Answer:
1/2
Step-by-step explanation:
if you find the LCD of the numbers, you will find that it is 8. Then, you divide both of them by 8 and you get 1/2
Hope this helped a bit :)
1)
=
2)
=
3)
=
Step-by-step explanation:
We need to solve following expressions.
1) 
We need to multiply numerator with numerator and denominator with denominator
Solving:

It cannot be further simplified so,
=
2) one third of 3/7
one third stands for 1/3
Now solving:

We need to multiply numerator with numerator and denominator with denominator

It cannot be further simplified so,
=
3) 
In this question we have to multiply 1.5 with 3.7

So,
=
Learn More:
You can find more information about multiplication of fractions at:
brainly.com/question/2456302
brainly.com/question/2166248
Keywords: fractions, multiplication
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