Question
In: Statistics and Probability
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 x=6. Use a 0.05 significance level.
(6.3 is not the correct answer!)
18) Find the regression equation, letting the first variable be the predictor (x) variable. Using the listed lemon/crash data, where lemon imports are in metric tons and the fatality rates are per 100,000 people, find the best predicted crash fatality rate for a year in which there are 525 metric tons of lemon imports. Is the prediction worthwhile?
Lemon Imports Crash Fatality Rate
233 16
267 15.7
363 15.3
484 15.4
531 14.9
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orchestra answered 1 year agoRelated Solutions
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...
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= 195, x= 5.88, s= 2.06. Use a 0.05 significance level to test the claim that the population mean of such ratings is less than 6.00. 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 n=187
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
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 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.
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.
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.
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.
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?
Is attractiveness related to deciding to go out on a date? Below is data for males...
Is attractiveness related to deciding to go out on a
date? Below is data for males and females from a study
on speed dating
(http://chance.amstat.org/2014/04/speed-dating/).
Males
Decision
Attractiveness
Rating
Date
No Date
0-4
11
0
4-8
100
65
8-10
16
81
Females
Decision
Attractiveness
Rating
Date
No Date
0-4
22
4
4-8
109
64
8-10
17
58
Is attractiveness related to deciding to go out on a
date? Below is data for males and females from a study
on speed...
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...
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