Question

A simple random sample of size n= 15 is drawn from a population that is normally distributed. The sample mean is found to be x overbar equals31.1 and the sample standard deviation is found to be s= 6.3. Determine if the population mean is different from 26 at the alpha equals 0.01 level of significance. Complete parts (a) through (d) below.

(a) Determine the null and alternative hypotheses.

(b) Calculate the P-value.

(c) State the conclusion for the test.

(d) State the conclusion in context of the problem.

There sufficient evidence at the a= 0.01 level of significance to conclude that the population mean is different from 26.

Answer #1

A simple random sample of size n-15 is drawn from a population
that is normally distributed. The sample mean is found to be 32.5
and the sample standard deviation is found to be s=6.3. Determine
if the population mean is different from 26 at the confidence
interval .01 level of significance. a) determine the null and
alternative hypotheses. b) calculate the p value. c) state the
conclusion for the test. d)state the conclusion in context of the
problem.

A simple random sample of size n=15 is drawn from a population
that is normally distributed. The sample mean is found to be bar
over x=19.5
and the sample standard deviation is found to be s=6.3.
Determine if the population mean is different from 25 at the
alpha=.01 level of significance.
A) Determine the null and alternative hypotheses
H0: ___ ____ 25
H1: ____ ____ 25
B) Calculate the p value
C) State conclusion. Reject or not reject? Is there...

A simple random sample of size nequals15 is drawn from a
population that is normally distributed. The sample mean is found
to be x overbarequals19.6 and the sample standard deviation is
found to be sequals6.3. Determine if the population mean is
different from 26 at the alpha equals 0.01 level of significance.
Complete parts (a) through (d) below. (a) Determine the null and
alternative hypotheses. Upper H 0: ▼ sigma mu p ▼ equals greater
than not equals less than...

A simple random sample of size nequals15 is drawn from a
population that is normally distributed. The sample mean is found
to be x overbarequals21.8 and the sample standard deviation is
found to be sequals6.3. Determine if the population mean is
different from 24 at the alpha equals 0.01 level of significance.
Complete parts (a) through (d) below. (a) Determine the null and
alternative hypotheses. Upper H 0: ▼ mu sigma p ▼ less than equals
greater than not equals...

A simple random sample of size
nequals=1515
is drawn from a population that is normally distributed. The
sample mean is found to be
x overbarxequals=29.429.4
and the sample standard deviation is found to be
sequals=6.36.3.
Determine if the population mean is different from
2424
at the
alpha equals 0.01α=0.01
level of significance. Complete parts (a) through (d)
below.
(a) Determine the null and alternative hypotheses.
Upper H 0H0:
▼
sigmaσ
muμ
pp
▼
not equals≠
less than<
equals=
greater than>...

A simple random sample of size nequals15 is drawn from a
population that is normally distributed. The sample mean is found
to be x overbarequals23.5 and the sample standard deviation is
found to be sequals6.3. Determine if the population mean is
different from 25 at the alpha equals 0.01 level of significance.
Complete parts (a) through (d) below. (a) Determine the null and
alternative hypotheses. Upper H 0: mu equals 25 Upper H 1: mu not
equals 25 (b) Calculate...

A simple random sample of size nequals40 is drawn from a
population. The sample mean is found to be 110.4?, and the sample
standard deviation is found to be 23.3. Is the population mean
greater than 100 at the alpha=0.01 level of? significance?
Determine the null and alternative hypotheses.
Compute the test statistic.
Determine the? P-value.
What is the result of the hypothesis? test?

A simple random sample of size n is drawn from a population that
is normally distributed. The samplemean,
x overbar
,
is found to be
105
,
and the sample standarddeviation,s, is found to be
10
.
(a)Construct
an
80
%
confidence interval about
mu
if the samplesize,n, is
26
.
(b)Construct
an
80
%
confidence interval about
mu
if the samplesize,n, is
16
.
(c)Construct
a
70
%
confidence interval about
mu
if the samplesize,n, is
26
.
(d)Could...

A simple random sample of size n is drawn from a population that
is normally distributed. The sample mean, x overbar, is found to
be 105, and the sample standard deviation, s, is found to be 10.
(a) Construct a 95% confidence interval about mu if the sample
size, n, is 26. (b) Construct a 95% confidence interval about mu
if the sample size, n, is 20. (c) Construct an 80% confidence
interval about mu if the sample size, n,...

A simple random sample of size
n=22
is drawn from a population that is normally distributed. The
sample mean is found to be
x overbar 69
and the sample standard deviation is found to be
s equals=20.
Construct a
90%
confidence interval about the population mean.
The
90%
confidence interval is
(?,?)

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