Question

Find the margin of error for the given values of c, s, and n.

c=0.80,

s=3.4,

n=14

Answer #1

Population standard deviation is not given. 's' is given. So, the
Confidence Interval uses t-distribution.

We assume that random sample is taken from approximately normal distribution.

Given:

s=sample standard deviation =3.4

n=sample size =14

c=confidence level=0.8

Thus,

alpha=1-c=1-0.8=0.2

df=degrees of freedom of t-distribution=n-1=14-1=13

For two tailed test, critical value can be obtained either by
using Statistical table or Software as:

t(alpha/2,df)=t(0.1,13)=1.350171

E=Margin of Error= t(alpha/2,df)*s/sqrt(n) = 1.226885

**E=1.226885**

**R-commands and
outputs**:

s=3.4

n=14

c=0.8

alpha=1-c

alpha

[1] 0.2

tc=qt(1-alpha/2,df=n-1)

tc

[1] 1.350171

E=tc*s/sqrt(n)

E

[1] 1.226885

Find the margin of error for the given values of c, s, and
n.
c=0.80, s=2.3, n=10

Find the margin of error for the given values of c, s, and
n.
cequals=0.8080,
sequals=66,
nequals=2626
LOADING...
Click the icon to view the t-distribution table.
The margin of error is?
(Round to one decimal place as needed.)

Find the margin of error for the given values of c, sigma, and
n. cequals0.95, sigmaequals3.3, nequals100

Find the margin of error for the given values of c, sigma, and
n. cequals0.95, sigmaequals3.9, nequals100

Find the margin of error for the given values of c, σ, and
n.
c=0.90, σ=3.3, n=81.
Eequals= _ (Round to three decimal places as needed.)

Find the margin of error for the given values of c,
sigmaσ,
and n.
cequals=0.950.95,
sigmaσequals=2.82.8,
nequals=64

Find the margin of error for the given confidence level and
values of x and n. x = 80, n = 146, confidence level 99%

Find the margin of error for the given confidence level and
values of x and n. x=79, n=187, 98% confidence level

Find the Margin of Error for each problem:
1) c = .95; n =
30; s = 3.5 Margin of Error=
2) c = .85; n =
18; s = 0.49 Margin of Error=
3) c = .95; n =
12; s = 12.6 Margin of Error=
4) c = .99; n =
26; s = 18.9 Margin of Error=
Round answers to three decimal places.

Find the value of E, the margin of error, for c = 0.90, n = 16
and s = 2.2.

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 15 minutes ago

asked 30 minutes ago

asked 39 minutes ago

asked 47 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago