How would you enter this data?

#1
I have to do a t-test (it doesn't say which type of t-test) in SPSS about the olfactory scores of smokers and non-smokers.
For smokers, we are given the scores so I know how to enter that in SPSS.
For non-smokers, we are not given the scores, it simply says
“On a test of olfactory sensitivity, non-smokers have a μ = 17.7”.
I'm so confused.
Does anyone know how I should enter the data for non-smokers although I'm not even given the scores and what to do with the info about the population mean?

Thank you
 
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