QUESTION 18 4 Assumimng a normal disribution, about what percent of x values lie between the first and second standard deviations from the mean (both sides)? Put your answer in decimals to 3 places. e.g 5.6% should be entered as 0.056. Hint: Use the following image to answer this question. There is no need to overthink this question. Equal Halves 99.7% - --T- 95.5% 68.3% 2.13% 13.60% 34.13% - - - 34.13% 13.60% 2.13% -30 -20 -10 +10 +20 +30 No. of standard deviations from the mean