Question
In: Statistics and Probability
A data set about speed dating includes "like" ratings of male dates made by the female...
A data set about speed dating includes "like" ratings of male dates made by the female dates. The summary statistics are
nequals=193193,
x overbarxequals=7.867.86,
sequals=2.262.26.
Use a
0.100.10
significance level to test the claim that the population mean of such ratings is less than
8.008.00.
Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim.
Solutions
Expert Solution
Solution-
population standard deviation is unknown, So t -test is calculated.
test results-
by the test results, the null hypothesis is not rejected.
Hence, There is not enough evidence to claim that the population mean of such rating is less than 8.00
orchestra answered 1 year agoRelated Solutions
A data set about speed dating includes "like" ratings of male dates made by the female...
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A data set about speed dating includes "like" ratings of male
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x=6.85 s=2.12 Use a 0.050 significance level to test the claim that
the population mean of such ratings is less than 7.00 Assume that a
simple random sample has been selected. Identify the null and
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A data set about speed dating includes "like" ratings of male
dates made by the female dates. The summary statistics are n=194,
x overbar=6.81, s=1.91. Use a 0.05 significance level to test the
claim that the population mean of such ratings is less than 7.00.
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null and alternative hypotheses, test statistic, P-value, and
state the final conclusion that addresses the original claim.
What are the null and alternative hypotheses?...
A data set about speed dating includes "like" ratings of male dates made by the female...
A data set about speed dating includes "like" ratings of male
dates made by the female dates. The summary statistics are n=189,
x bar =6.89, s=2.21. Use a 0.10 significance level to test the
claim that the population mean of such ratings is less than 7.00.
Assume that a simple random sample has been selected. Identify the
null and alternative hypotheses, test statistic, P-value, and
state the final conclusion that addresses the original claim.
A data set about speed dating includes "like" ratings of male dates made by the female...
A data set about speed dating includes "like" ratings of male
dates made by the female dates. The summary statistics are
nequals=195195,
x overbarxequals=7.537.53,
sequals=1.971.97.
Use a
0.050.05
significance level to test the claim that the population mean of
such ratings is less than
8.008.00.
Assume that a simple random sample has been selected. Identify
the null and alternative hypotheses, test statistic, P-value, and
state the final conclusion that addresses the original claim.
In a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and the sample of the results is listed below
In a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and the sample of the results is listed below (1=not attractive; 10=extremely attractive). Construct a confidence interval using a 90% confidence level.
5, 9, 1, 8, 4, 5, 8, 8, 7, 8, 5, 9
What is the confidence interval for the population mean?
Listed below are “attractiveness” ratings made by couples in a speed dating session. Use a 0.05...
Listed below are “attractiveness” ratings made by couples in a
speed dating session. Use a 0.05 significance level to test the
claim that there is a difference between female and male
ratings
rating of male by female
4
8
7
7
6
8
6
4
2
5
9.5
7
rating of female by male
6
8
7
9
5
7
5
4
6
8
6
5
rating of male by female 4 8 7 7 6 8 6 4 2...
13) For 50 randomly selected speed dates, attractiveness ratings by males of their female date partners...
13) For 50 randomly selected speed dates, attractiveness
ratings by males of their female date partners (x) are recorded
along with the attractiveness ratings by females of their male date
partners (y); the ratings range from 1 to 10. The 50 paired
ratings yield: x overbar=6.3, y overbar=6.2 , r=−0.220,
P-value=0.1250, and y^=7.79-0.248x. Find the best
predicted value of y^ (attractiveness rating by female of male)
for a date in which the attractiveness rating by the male of the
female is...
For 50 randomly selected speed dates, attractiveness ratings by males of their female date partners (x)...
For 50 randomly selected speed dates, attractiveness ratings by
males of their female date partners (x) are recorded along with
the attractiveness ratings by females of their male date partners
(y); the ratings range from 1 to 10. The 50 paired ratings yield x
(overboard)= 6.3, y (overboard) =6.0, r = −0.275, P-value=
0.053, and y^ = 8.13−0.332x. Find the best predicted value of
ModifyingAbove y with caret y^ (attractiveness rating by female
of male) for a date in which...
Listed below are attractiveness ratings made by participants in a speed dating session. Each attribute rating...
Listed below are attractiveness ratings made by participants in
a speed dating session. Each attribute rating is the sum of the
ratings of five attributes (sincerity, intelligence, fun, ambition,
shared interests).
Use a 0.05 significance level to test the claim that there is a
difference between female attractiveness ratings and male
attractiveness rating by following the steps below:
(a) State the null and alternative hypotheses, indicate the
significance level and the type of test (left-, right-, or
two-tailed test).
(b)...
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