BUAL 2650 Gupta Exam 2 with Questions and Correct Answers 2025.

BUAL 2650 Gupta Exam 2 with Questions
and Correct Answers 2025




In ,testing ,for ,the ,equality ,of ,means ,from ,two ,independent ,populations, ,if ,the
,hypothesis ,of ,equal ,population ,means ,is ,rejected ,at ,α ,= ,.01, ,it ,will ,________ ,be
,rejected ,at ,α ,= ,.05


a. ,always
b. ,sometimes
c. ,never ,- ,CORRECT ,ANSWER-a. ,always

A ,new ,company ,is ,in ,the ,process ,of ,evaluating ,its ,customer ,service. ,The ,company
,offers ,two ,types ,of ,sales: ,(1) ,Internet ,sales ,and ,(2) ,store ,sales. ,The ,marketing
,research ,manager ,believes ,that ,the ,Internet ,sales ,are ,more ,than ,10 ,percent ,higher
,than ,store ,sales. ,The ,null ,hypothesis ,would ,be


a. ,PInternet ,− ,Pstore ,> ,.10
b. ,PInternet ,− ,Pstore ,< ,.10
c. ,PInternet ,− ,Pstore ,≥ ,.10
d. ,PInternet ,− ,Pstore ,≤ ,.10
e. ,PInternet ,− ,Pstore ,= ,.10 ,- ,CORRECT ,ANSWER-d. ,PInternet ,− ,Pstore ,≤ ,.10

A ,new ,company ,is ,in ,the ,process ,of ,evaluating ,its ,customer ,service. ,The ,company
,offers ,two ,types ,of ,sales: ,(1) ,Internet ,sales ,and ,(2) ,store ,sales. ,The ,marketing
,research ,manager ,believes ,that ,the ,Internet ,sales ,are ,more ,than ,10 ,percent ,higher
,than ,store ,sales. ,The ,alternative ,hypothesis ,would ,be ,stated ,as


a. ,PInternet ,− ,Pstore ,> ,0
b. ,PInternet ,− ,Pstore ,< ,0
c. ,PInternet ,− ,Pstore ,≥ ,.10
d. ,PInternet ,− ,Pstore ,≤ ,.10
e. ,PInternet ,− ,Pstore ,> ,.10 ,- ,CORRECT ,ANSWER-e. ,PInternet ,− ,Pstore ,> ,.10

, If ,we ,are ,testing ,the ,hypothesis ,about ,the ,mean ,of ,a ,population ,of ,paired ,differences
,with ,samples ,of ,n1 ,= ,10, ,n2 ,= ,10, ,the ,degrees ,of ,freedom ,for ,the ,t ,statistic ,is
,________.


a. ,19
b. ,18
c. ,9
d. ,8
e. ,10 ,- ,CORRECT ,ANSWER-c. ,9

The ,________ ,measures ,the ,strength ,of ,the ,linear ,relationship ,between ,the
,dependent ,variable ,and ,the ,independent ,variable.


a. ,correlation ,coefficient
b. ,distance ,value
c. ,Y-intercept
d. ,residual ,- ,CORRECT ,ANSWER-a. ,correlation ,coefficient

The ,correlation ,coefficient ,may ,assume ,any ,value ,between

a. ,0 ,and ,1
b. ,−∞ ,and ,∞
c. ,0 ,and ,8
d. ,−1 ,and ,1
e. ,−1 ,and ,0 ,- ,CORRECT ,ANSWER-d. ,−1 ,and ,1

The ,following ,results ,were ,obtained ,as ,part ,of ,a ,simple ,regression ,analysis.
r2 ,= ,.9162F ,
statistic ,from ,the ,F ,table ,= ,3.59
Calculated ,value ,of ,F ,from ,the ,ANOVA ,table ,= ,81.87
α ,= ,.05
p-value ,= ,.000

The ,null ,hypothesis ,of ,no ,linear ,relationship ,between ,the ,dependent ,variable ,and ,the
,independent ,variable


a. ,is ,rejected
b. ,cannot ,be ,tested ,with ,the ,given ,information
c. ,is ,not ,rejected
d. ,is ,not ,an ,appropriate ,null ,hypothesis ,for ,this ,situation. ,- ,CORRECT ,ANSWER-a. ,is
,rejected


The ,coefficient ,of ,determination ,measures ,the ,________ ,explained ,by ,the ,simple
,linear ,regression ,model.


a. ,correlation