Answer:
Step-by-step explanation:
Hello!
You need to construct a 95% CI for the population mean of the length of engineering conferences.
The variable has a normal distribution.
The information given is:
n= 84
x[bar]= 3.94
δ= 1.28
The formula for the Confidence interval is:
x[bar]±*(δ/n)
Lower bound(Lb): 3.698
Upper bound(Ub): 4.182
Error bound: (Ub - Lb)/2 = (4.182-3.698)/2 = 0.242
I hope it helps!
762,508 in expanded form using exponents is given as:
Given that we have to write 762, 508 in expanded form using exponents
Expanded form or expanded notation is a way of writing numbers to see the math value of individual digits
<h3><u>Write 762508 in Expanded form</u></h3>Let us first find the place value of digits
Place value can be defined as the value represented by a digit in a number on the basis of its position in the number.
Place value of 7 = 700000
In 762508, 7 is in hundred-thousands place
Place value of 6 = 60000
In 762508, 6 is in ten-thousands place.
Place value of 2 = 2000
In 762508, 2 is in thousands place
Place value of 5 = 500
In 762508, 5 is in hundreds place
Place value of 0 = 0 x 10 = 0
In 762508, 0 is in tens place
Place value of 8 = 8
In 762508, 8 is in ones place
Therefore, the expanded form is given as:
700,000 + 60,000 + 2,000 + 500 + 0 + 8
<u><em>Using exponents we can write as,</em></u>