Question
In: Statistics and Probability
Suppose that you are testing the hypotheses Upper H 0: pequals0.25 vs. Upper H Subscript Upper...
Suppose that you are testing the hypotheses Upper H 0: pequals0.25 vs. Upper H Subscript Upper A: pnot equals0.25. A sample of size 300 results in a sample proportion of 0.31.
a) Construct a 90% confidence interval for p. b) Based on the confidence interval, can you reject Upper H 0 at alphaequals0.10? Explain. c) What is the difference between the standard error and standard deviation of the sample proportion? d) Which is used in computing the confidence interval?
Solutions
Expert Solution
Note-if
there is any understanding problem regarding this please feel free
to ask via comment box..thank you
orchestra answered 3 years agoRelated Solutions
Suppose that you are testing the hypotheses Upper H 0: pequals0.22 vs. Upper H Subscript Upper...
Suppose that you are testing the hypotheses Upper H 0:
pequals0.22 vs. Upper H Subscript Upper A: pnot equals0.22. A
sample of size 350 results in a sample proportion of 0.28. a)
Construct a 95% confidence interval for p. b) Based on the
confidence interval, can you reject Upper H 0 at alphaequals0.05?
Explain. c) What is the difference between the standard error and
standard deviation of the sample proportion? d) Which is used in
computing the confidence interval?
(a) Write the claim mathematically and identify Upper H 0 and Upper H Subscript a. (b)...
(a) Write the claim mathematically and identify Upper H 0 and
Upper H Subscript a. (b) Find the critical value(s) and identify
the rejection region(s). (c) Find the standardized test
statistic. (d) Decide whether to reject or fail to reject the null
hypothesis. A medical researcher says that at least 24% of adults
are smokers. In a random sample of 160 adults, 22.5% say they are
smokers. At alphaequals0.03, do you have enough evidence to reject
the researcher's claim?
1. Suppose a researcher is testing the hypothesis Upper H 0: pequals0.6 versus Upper H 1:...
1. Suppose a researcher is testing the hypothesis Upper H 0:
pequals0.6 versus Upper H 1: p less than0.6 and she finds
the?P-value to be 0.24. Explain what this means. Would she reject
the null?hypothesis? Why?
Choose the correct explanation below.
If the?P-value for a particular test statistic is 0.24, she
expects results no more extreme than the test statistic in about 24
of 100 samples if the null hypothesis is true.
If the?P-value for a particular test statistic is...
Consider the hypotheses below. Upper H 0: mu greater than or equals 65 Upper H 1:...
Consider the hypotheses below. Upper H 0: mu greater than or
equals 65 Upper H 1: mu less than 65 Given that x overbar equals
57.3, s equals 9.7, nequals25, and alphaequals0.10, complete
parts a and b below. a) What conclusion should be drawn?
Determine the critical value(s). The critical value(s) is(are)
nothing. (Round to three decimal places as needed. Use a comma to
separate answers as needed.) Determine the test statistic, t
Subscript x overbar. t Subscript x overbarequals...
In a test of Upper H 0H0: muμequals=100 against Upper H Subscript aHa: muμnot equals≠100, the...
In a test of
Upper H 0H0:
muμequals=100
against
Upper H Subscript aHa:
muμnot equals≠100,
the sample data yielded the test statistic
z equals 1.87z=1.87.
Find the
Upper PP-value
for the test.
P equals=???
(Round to four decimal places as needed.)
Suppose that you are testing the hypotheses H0: μ =11 vs. HA: μ <11 A sample...
Suppose that you are testing the hypotheses H0: μ =11 vs. HA:
μ <11 A sample of size 64 results in a sample mean of 11.5 and a
sample standard deviation of 2.4 a) What is the standard error of
the mean? b) What is the critical value of t* for a 99 %
confidenceinterval? c) Construct a 99%confidence interval for μ.
d) Based on the confidence interval, at a =0.005 can you reject
H0? Explain.
2)Before lending someone money,...
Suppose that you are testing the hypotheses H0: p=0.18 vs. HA: p=/ 0.18. A sample of...
Suppose that you are testing the hypotheses H0: p=0.18 vs. HA:
p=/ 0.18. A sample of size 150 results in a sample proportion of
0.25.
a) Construct a 99% confidence interval for p.
b) Based on the confidence interval, can you reject H0 at a
=0.01? Explain.
c) What is the difference between the standard error and
standard deviation of the sample proportion?
d) Which is used in computing the confidence interval?
Suppose we’re testing ?0 : ? = 80 vs. ?0 : ? > 80 . Assume...
Suppose we’re testing ?0 : ? = 80 vs. ?0 : ? > 80 . Assume
throughout that the population standard deviation is ? = 10.
a) Suppose a sample of size 56 is collected and ?̅= 83.5 is
observed. Compute the standardized test statistic and p-value.
b)Suppose that the significance level of the test is set at ? =
0.09, and a sample of size 56 is to be chosen. Find the rejection
region, that is, find the set...
Suppose that you are testing the hypotheses H0: u=74 vs. HA: u does not equal 74....
Suppose that you are testing the hypotheses H0: u=74 vs. HA: u
does not equal 74. A sample of size 51 results in a sample mean of
69 and a sample standard deviation of 1.8.
a) What is the standard error of the mean?
b) What is the critical value of t* for a 90% confidence
interval?
c) Construct a 90% confidence interval for mu.
d) Based on the confidence interval, at a=0.100 can you reject
H0?...
Consider the hypotheses below. Upper H 0H0: mu greater than or equals 55μ≥55 Upper H 1H1:...
Consider the hypotheses below.
Upper H 0H0: mu greater than or equals 55μ≥55
Upper H 1H1: mu less than 55μ<55
Given that
x overbar equals 51.6
s equals 10.6
n equals=15
and
alpha (α) equals=0.01
Determine the p-value
& can someone please show me how to find the p-value?!
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- A labor market has 50,000 people in the labor force. Each month, a fraction p of...
- A road with a radius of 72 m is banked so that a car can navigate...
- 1) If you had not dried the solid, would the calculated percent yield have been higher,...
- Two structures of alanine can be drawn that have a net charge of zero, but the...
- Co(II) was used as an internal standard to analyze a sample of Ti(IV) with atomic absorption...
- Matlab Programming Write an M-file to read a real-valued vector of any length from the keyboard...
- TASK back to top In the contemporary management environment, mergers and acquisitions are hot topics; particularly...
ADVERTISEMENT