Ryan made 65 ounces of apple jelly. He put the same amount of jelly into 6 jars. About how much jelly is in each jar?
2 answers:
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Answer:
The 80% confidence interval for the the population mean nitrate concentration is (0.144, 0.186).
Critical value t=1.318
Step-by-step explanation:
We have to calculate a 80% confidence interval for the mean.
The population standard deviation is not known, so we have to estimate it from the sample standard deviation and use a t-students distribution to calculate the critical value.
The sample mean is M=0.165.
The sample size is N=25.
When σ is not known, s divided by the square root of N is used as an estimate of σM:
The degrees of freedom for this sample size are:
The t-value for a 80% confidence interval and 24 degrees of freedom is t=1.318.
The margin of error (MOE) can be calculated as:
Then, the lower and upper bounds of the confidence interval are:
The 80% confidence interval for the population mean nitrate concentration is (0.144, 0.186).
Circumference + perimeter =38
x = circumference of circle
find r in terms of x
2
r=x
r=
Area=r^2
so..
A=()^2
=(
)
=
(38-x) is perimeter
then
()^2
+ ()^2
then you graph it and it equals
16.716 cm the circumference of the circle
x = circumference of circle
find r in terms of x
2
r=
Area=
so..
A=
=
=
(38-x) is perimeter
then
(
then you graph it and it equals
16.716 cm the circumference of the circle