your softball team is ordering equipment from a catalog. Each bat costs $42. The cost of shipping is $12 no matter how much you
1 answer:
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Answer: (3,-2)
Step-by-step explanation:
new system:
add.
plug in -2 for y
system:
Answer:
The standard error increases and the width of the interval increases
Step-by-step explanation:
The variance is equal to the square of the standard deviation. An increase in variance will increase the standard deviation.
The width of the confidence interval can be defined as:
The width is proportional to the standard deviation, so when the variance increases, the standard deviation and also the width of the interval increases.