Barilla, a manufacturer of pasta has historical data that their packages of angel hair pasta have a known constant variance of 16 grams and average weight of 450 grams. however, their cardboard packaging often affects the total weight and a recent sample of 25 boxes found the average weight to be 430 grams. what is the margin of error for a 95% confidence interval to two decimal places?

1.57

Step-by-step explanation:

As we consider the given description, we have

n= 25

Critical z-value for 95% confidence =

The formula to find the margin of error :

Hence, the margin of error for a 95% confidence interval =1.57

squares, rhombus, rectangles

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation: