The objectives of this study were to study the demographic factors including gender age status education level occupation and income affecting the decision to buy food online and tostudy the marketing mix and technology adoption that affected the online food purchasing decisions of Baby Boomersin Bangkok. The population was 55-75 years old Baby Boomer who bought food online in Bangkok. The probability sampling specifically the stratified sampling method was used to determine the total of 400 samples. The data was analyzed using descriptive statistics such as frequency percentage mean and standard deviation. The inferential statistics were Independent Sample T-test One-way ANOVA analysis Pearsons Correlation Coefficient and Multiple Regression Analysis The study results showed that the marketing mix factors could meet the demand for online food ordering of the sample in high level. The technology acceptance level of the overall sample group was high. The importance of the 4-step online food purchasing decision process of the samples namely the perception of the need or problem information seeking alternative assessment and buying decisions was high. The hypothesis testing found that on the evaluation of purchasing options different age groups had a statistically significant difference at 0.05. On purchasing decision married samplesand the widows paid more attention to the purchasing decision process differently at the statistical significance of 0.05.On the perception of needs or problems the sample group with bachelors degrees put more emphasis than those who graduated from elementary schoolsand the group who finished secondary education with the statistical significance at 0.05. On the evaluation of purchasing decision options the group with secondary education put less emphasis thanthe group with bachelors degrees at the statistical significanceof 0.01. On purchasing decision the group with secondary education put less emphasis than associate degree graduates with the statistical significance at 0.05 and put less emphasis thanthe group with a bachelors degree with the statistical significance at 0.05. On data acquisition groups with different incomes put different emphasis with the statistical significance at 0.05. Convenience ease of use and consumer factors had a positive influence on the need or problem perception process at the significant level of 0.05. Convenience benefit perception and ease of use factors had a positive influence on the information seeking processat the significance level of 0.05. Value convenience communication ease of useand consumer factors had a positive influence on the process of evaluating purchasing options at the significant level of 0.05. Convenience benefit perception ease of use and consumer factorshad a positive influence on the purchasing decision process at the significance level of 0.05.

The purposes of this research were : 1) to The decision to buy food from the delivery business of Phranakhon Rajabhat University students 2) to study the marketing mix factors used to decide on the purchase of food from the delivery business of Phranakhon Rajabhat University students Phuket Province 3) to ddetermine the relationship between demographic characteristics and food purchasing decision behavior of the students of Phranakhon Rajabhat University and 4) to Determining the relationship between marketing mix and decision-making behavior of food business students in Phra Nakhon Rajabhat University. Samples were students who are studying at the first year of undergraduate level of Phranakhon Rajabhat University students and have bought 400 types of delivery. The instruments used is the statistical questionnaire used in data analysis include frequency value percentage value mean value standard deviation value and Pearson Chi-square. Statistical analysis using computer program. The results showed that: 1) most of the students decided to buy food from KFC. The average cost per session is about 301-400 Baht which will be bought after 7:00 pm on Saturdays and Sundays. To eat with friends the person who influenced the decision to order food is the student who knows about the promotion of food delivery from the Internet. And why decide to buy food delivery. Because the promotion. Or have a promotion 2) the students opinions on the marketing mix used in the decision to buy food from the overall delivery business. Very high when considering each item in descending order the most significant aspect was the distribution channel followed by the product price. And the least is marketing 3) the relationship between demographic characteristics is the gender of the students. And accommodation the decision to buy food from the delivery business of Phranakhon Rajabhat University students was found to be related and 4) the relationship between marketing mix factors: product price distribution channel and promotion. Relationships with decision-making behavior of food business students in Phra Nakhon Rajabhat University statistically significant at the .05 level.