Question
For the following claim, find the null and alternative hypotheses, test statistic, critical value, and draw...
For the following claim, find the null and alternative hypotheses, test statistic, critical value, and draw a conclusion. Assume that a simple random sample has been selected from a normally distributed population. Answer parts a-d.
Claim: The mean IQ score of statistics professors is less than 125.
Sample data: n= 12, x= 123, s= 99. The significance level is a= 0.05.
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
For the following claim, find the null and alternative hypotheses, test statistic, critical value, and draw...
For the following claim, find the null and alternative
hypotheses, test statistic, critical value, and draw conclusion.
Assume that a simple random sample has been selected from a
normally distributed population.
Claim: the mean IQ score of statistics professors is less than
127.
Sample data: n = 28, x = 125, s = 13. The significance
level is a = 0.05
For the following claim, find the null and alternative hypotheses, test statistic, critical value, and draw...
For the following claim, find the null and alternative
hypotheses, test statistic, critical value, and draw a
conclusion. Assume that a simple random sample has been selected
from a normally distributed population. Answer parts a-d. Claim:
The mean IQ score of statistics professors is greater than 130.
Sample data: nequals11, x overbarequals135, sequals8. The
significance level is alphaequals0.05.
Test the following claim. Identify the null hypothesis, alternative hypothesis, test statistic, critical value(s), conclusion about...
Test the following claim. Identify the null hypothesis,
alternative hypothesis, test statistic, critical value(s),
conclusion about the null hypothesis, and final conclusion that
addresses the original claim. A manual states that in order to be
a hit, a song must be no longer than three minutes and thirty
seconds (or 210 seconds). A simple random sample of 50 current
hit songs results in a mean length of 250.0 sec. Assume the
population standard deviation of song lengths is 54.5 sec....
Identify the null and alternative hypothesis(in symbolic and sentence form), test statistic, P-value(or critical values), conclusion...
Identify the null and alternative hypothesis(in symbolic and
sentence form), test statistic, P-value(or critical values),
conclusion about the null hypothesis, and final conclusion that
addresses the original claim (Don’t just say Reject the null
hypothesis or fail to reject the null hypothesis).
4. Test the claim that the mean age of the prison population in
one city is less than 26 years. Sample data are summarized as
n=25,x ̅=24.4,and s=9.2. Use a significance level of α=0.05.
Test the claim about the population mean μ at the level of significance α. Assume the...
Test the claim about the population mean μ at the level of
significance α. Assume the population is normally distributed.
Write out null and alternative hypotheses, your critical z-score
and your z-test statistic. Decide whether you would reject or fail
to reject your null hypothesis.
Claim: μ > 28; α = 0.05, σ = 1.2
Sample statistics: x̅ = 28.3, n = 50
H0:
Ha:
Critical z-score:
Z test statistic:
Decision:
Claim that for the population of statistic: The mean score is 74, using alternative hypothesis that...
Claim that for the population of statistic:
The mean score is 74, using alternative hypothesis that the mean
score is different from 74. Sample statistics include n=21,,
x=76,x¯=76, and s=11. Use a significance level of α=0.05.
Test Statistic:
Positive Critical Value:
Negative Critical Value:
Conclusion:
A. There is not sufficient evidence to reject the claim that the
mean score is equal to 74
or
B. There is sufficient evidence to reject the claim that the
mean score is equal to...
Test the claim that for the population of statistics final exams, the mean score is 78...
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 ____
Find using traditional method or P-value method. Identify the null and alternative hypothesis, test statistic, critical...
Find using traditional method or P-value method. Identify the null
and alternative hypothesis, test statistic, critical value(s) or
P=value (or range of P-values) as appropriate, and state the final
conclusion that addresses the original claim.
A company claims that the mean weight of the oatmeal in its
packets is 14oz. The weights in ounces of the oats in a random
sample of 8 of the oat packets are listed below
14.6 13.8 14.1 13.7 14.0 14.4 13.6 14.2
Test the...
Identify the null and alternative hypothesis(in symbolic and sentence form), test statistic, P-value(or critical values), conclusion...
Identify the null and alternative hypothesis(in symbolic and
sentence form), test statistic, P-value(or critical values),
conclusion about the null hypothesis, and final conclusion that
addresses the original claim (Don’t just say Reject the null
hypothesis or fail to reject the null hypothesis).
2. According to a recent poll 53% of Americans would
vote for the incumbent president. If a random sample of 100 people
results in 45% who would vote for the incumbent, test the claim
that the actual percentage is...
Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final...
Identify the null hypothesis, alternative hypothesis,
test statistic, P-value, conclusion about the null hypothesis, and
final conclusion that addresses the original claim. Use the P-value
method.
A simple random sample of 55 adults is obtained from a normally
distributed population, and each person’s red blood cell count (in
cells per microliter) is measured. The sample mean is 5.26 and the
sample standard deviation is 0.54. Use α = .07 to test the claim
that the sample is from a population...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 7 minutes ago
asked 8 minutes ago
asked 11 minutes ago
asked 12 minutes ago
asked 13 minutes ago
asked 32 minutes ago
asked 33 minutes ago
asked 50 minutes ago
asked 54 minutes ago
asked 57 minutes ago
asked 59 minutes ago
asked 1 hour ago