what is a mixed effect model why is it necessary to employ a repeated measures approach why use repeated measures design when to use mixed effects approach for a grocery store? can you use mixed effects and repeated measures why would repeatable measures be used in mixed effects modeling? which intervention works best to reduce wait time at a grocery store? does repeated measures approach work how many store intervention are there at each grocery store what is the mixed effect approach to repeated measures? can you use a mixed-effects model to assess wait time? what is the repeatable intervention approach in a mixed test scenario what is the difference between mixed measures and repeated measures what type of model does repeated measures use repeated measures approach with mixed effects model which approach to repeated measures involves clustering of observed wait times between stores? what model would you use to evaluate the effect of repeated measurement what is repeated measures approach which intervention is best at reducing wait time at a grocery store when is repeatable measures used