Biostat MS - Do Credentials of recommendation letter writers matter??

[lombardo]

Hello,

I did a bachelor's in biology and environmental science, with only one 400 level statistics course. I'm taking further math classes at a community college right now, before applying for an MS in Biostatistics. I know my limited math background already puts me in a bad spot, but I'm unsure about my picks for recommendation letters as well. 

I was wondering if it matters that my writers dont all have PhDs, esp since only 1 is in math.

Right now, I have one biology professor (PHD bio), one environmental science professor (MS env sci) and the stats lecturer (he wasnt a professor. MS applied math) They all know me well, but is that good enough? 

[cyberwulf]

I think you should strive to have at least 2 letters from people with PhDs.