Question

Use a chi-squared-test to test the claim sigma less than 38 at the alpha equals 0.05 significance level using sample statistics s=35.4 and n=17. Assume the population is normally distributed.

Answer #1

Test the claim about the population mean mu at the level of
significance alpha. Assume the population is normally
distributed.
Claim: u > 25; alpha = 0.05; sigma=1.2
Sample statistics: x overbar=25.3, n=50

Use technology and a t-test to test the claim about the
population mean mu at the given level of significance alpha using
the given sample statistics. Assume the population is normally
distributed. Claim: mu greater than 74; alpha=0.01 Sample
statistics: x overbar=76.5, s=3.4, n=26

To test Upper H 0 : sigma equals 1.6 versus Upper H 1 : sigma
greater than 1.6, a random sample of size n equals 19 is obtained
from a population that is known to be normally distributed.
(a) If the sample standard deviation is determined to be s
equals 2.1, compute the test statistic.
(b) If the researcher decides to test this hypothesis at the
alpha equals 0.01 level of significance, use technology to
determine the P-value.
(c)...

Compute the standardized test statistic, chi squaredχ2, to
test the claim sigma squaredσ2greater than>3.83.8 if n
equals=18, s squareds2equals=5.45.4, and alpha equals 0.01
.α=0.01. Round the test statistic to the nearest thousandth.

Test the claim about the population mean ? at the given level of
significance using the given sample statistics. Assume the
population is normally distributed. Be sure to identify the null
and alternative hypotheses. Claim: u=200, alpha= 0.05 Sample
Statistics: x overbar= 210, s=30, n=16

Use technology and a t-test to test the claim about the
population mean muμ at the given level of significance
alphaα using the given sample statistics. Assume the population
is normally distributed.
Claim: muμgreater than>7474 ; alphaα=0.010
Sample statistics:
x bar=74.374.3 , s=2.92.9 , n=26
What is the p-value of the test statistic?

Use a t-test to test the claim about the population mean μ at
the given level of significance α using the given sample
statistics. Assume the population is normally distributed.
Claim: μ=51,300; α=0.10 Sample statistics:
x overbar =52,024
s=2,100
n=19

Use a? t-test to test the claim about the population mean mu at
the given level of significance alpha using the given sample
statistics. Assume the population is normally distributed. ?Claim:
muequals51 comma 700?; alphaequals0.01????Sample? statistics: x
overbarequals51 comma 436?, sequals1800?, nequals20

Assume that the significance level is alpha equals 0.05. Use the
given information to find the? P-value and the critical? value(s).
The test statistic of z = -1.07 is obtained when testing the claim
that p greater than 0.4.

Test the claim that for the population of statistics final
exams, the mean score is 78 using alternative hypothesis that the
mean score is different from 78. Sample statistics include
n=27,x¯=79, and s=16. Use a significance level of α=0.05. (Assume
normally distributed population.)
The test statistic is ____
The positive critical value is _____
The negative critical value is _____
The conclusion is ____

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