Interval A to Interval B to One waitress generally waits on

Interval A: $\"3.55\"$ to $\"4.15\"$

Interval B: $\"3.35\"$ to $\"4.35\"$

One waitress generally waits on $\"20\"$ tables in an average shift. Give a range for her expected daily tip revenue, using both $\"90$ and $\"99$ confidence intervals.

Round your answers to the nearest integer.

Confidence level		Confidence interval
$\"90$	:	$\"Entry$	to	$\"Entry$
$\"99$	:	$\"Entry$	to	$\"Entry$

Ans:

99% confidence interval will be wider than 90% confidence interval.

(higher the confidence level,wider the confidence interval)

For 90% confidence interval,average daily tip revenue will be from 3.55 to 4.15

(interval length=4.15-3.55=0.6)

For 99% confidence interval,average daily tip revenue will be from 3.35 to 4.35

(interval length=4.35-3.35=1.0)

Interval A: to Interval B: to One waitress generally waits on tables in an average shift. Give a range for her expected daily tip revenue, using both and confi

Interval A to Interval B to One waitress generally waits on

Solution

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