Confidence Interval for the Population Mean

$x$ $x$ $x$ $x$ $x$ $x$ $x$ $x$ $x$

Suppose the systolic blood pressure (BP) for males aged $35$ to $44$ has a $N(\mu, 12)$ distribution.

A researcher randomly selects $63$ men from this age group and finds a mean BP of $\bar{X}=127.98$ .

Calculate the margin of error of the $99\%$ confidence interval for the population mean $\mu$ . Round your answer to $3$ decimal places.

$ME=$

About us ⋅ Help ⋅ Privacy ⋅ Terms and conditions
Copyright © 2025 Sowiso

units
abc
abc
abc
vector
logic
function
standard

7

8

9

+

4

5

6

−

1

2

3

÷

.

0

=

×∗×

√

nth root

a■

$fraction$

>

log

sin

∧

e

<

ln

cos

∨

π

≥

|

|

tan

all

≤

!

°

none

↵

backspace

(

)

C

↑

←

↓

→

x

y