IF-ELSE NOT FUNCTIONING PROPERLY

|So this is my code, for some reason instead of reading the 'if' statement and showing 'accept' it immediately skips to 'else' and show 'reject' as a result in my hypothesis test PLEASE I NEED HELP FOR THIS :( | if true
  % code
endedit1 = str2num(get(handles.edit1,'string'));
text11 = num2str((20-edit1)/(1.3/sqrt(15)));
if  text11 > -5.5 & text11 < 5.5
  set (handles.text13,'string','accept');
else 
  set(handles.text13,'string','reject');
end 
set(handles.text10,'string',edit1);
set(handles.text11,'string',text11);

if true
  % code
end

Answer 1

[Fangjun Jiang]

text11 = (20-edit1)/(1.3/sqrt(15));

Answer 2

[Image Analyst]

Why are you comparing a character string to a double? A string is NOT a number even if the characters in the string are numbers. Why not just use endedit1:

if  endedit1 > -5.5 & endedit1 < 5.5