Answer:
A 95% confidence interval estimate of the population mean (average) daily balance of all the checking accounts is $274.32 to $331.68
Step-by-step explanation:
Consider the provided information.
A random sample of 21 checking accounts at the bank are chosen,
That means n=21
df = n-1
df = 21-1=20
We need to Construct and interpret a 95% confidence interval.
Determine t critical value for 95% confidence interval.
0.95=1-α
α=0.05
The sample size is small and it is a two tailed test.
From the t value table confidence interval is 2.086
An average daily balance is $303 and a standard deviation of $63.

Substitute the respective values.



A 95% confidence interval estimate of the population mean (average) daily balance of all the checking accounts is $274.32 to $331.68
Answer:
the answer is 7
Step-by-step explanation:

<u>Domain</u> <u>Range</u>
-3 ¹/₂
-2 ¹/₃
-1 0
0 -1
1 undefined
2 3
3 1¹/₂
8/9 because there are 36 inches in a yard and you need to convert all the yards to inches and turn it into a fraction. The original fraction is 192/216 but it simplifies to 8/9.
4 feet because 7x3x4 is 84