Data Collection: Two$-$Sample Tests $1.$A

Instructions: Use the interactlve tool as directed to answer the questlons below.

Use the dropdown menu to choose the Market Research Data data set. The varlable descriptions are as follows:

No:$-$ An arbltrary identification number assigned to each consumer surveyed

Age: The age of the survey respondent

RateNew: The respondent's rating of the new cell phone

RateCurr: The respondent's rating of thelr current cell phone

CurrBrand: The brand of the respondent's current cell phone

Choose a sample of $100$ observatlons. For the following question or analysls request, Identify the approprlate hypothesls test to

perform.

"Between Brand A and Brand B$,$ which cell phone has the highest ratings among its current users?"

a$.$ Conduct a test for a slope in a linear regression $,$ with a hypothesized value of $.($Enter $999$ if no test is needed.

Round to two decimal places. $"$ Some speclal cases of two$-$sample tests for a difference in means could also be done with a one$-$

way ANOVA test. For these cases, select a Two$-$Sample Test for a Difference in Means.$)$

b$.$ The test or other calculations will use the following varlable$($s$).($Mark varlables used directly in calculating means, proportions, or

a regression. Use existing varlables whenever possible. Do not mark varlables used only for sorting.$)$

$?$ Age

$?$ RateNew

$?$ RateCurr

$?$ currBrand

$7$ A combination modification of one or more existing varlables

c$.$ The test or calculations will use data from $($Click to select$)V$ of the $100$ observations.