Suppose that a sample of 200 accounts receivable entries at a large mail-order firm had a mean price of $846.20 and a standard deviation of $1,840.80. give a 95% confidence interval for the population mean. be sure to state any assumptions that you

[ $591.08, $1101.32 ]

Explanation:

Given:

Sample space = 200

Mean price = $846.20

Standard deviation, σ = $1,840.80

Confidence level = 95%

Now,

Confidence interval is given as:

⇒ Mean ±

here, z value for 95% is 1.96 from the standard z table

Thus,

Confidence interval

⇒ $846.20 ±

or

⇒ $846.20 ±

or

⇒ $846.20 ± 255.12

or

⇒ [ $846.20 - 255.12, $846.20 + 255.12 ]

or

⇒  [ $846.20 - 255.12, $846.20 + 255.12 ]

or

⇒ [ $591.08, $1101.32 ]

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answer: b. false

the staff is a set of five horizontal lines and four spaces which represent a different musical pitch. the lines and the spaces are numbered from bottom to top, the bottom line is the first line and the fifth line is the line on the top. the notes on the top of the staff (fifth line) have a higher pitch than a note at the bottom of the staff.