theme park rules
1. no outside food allowed inside the park; water is allowed.
2. free re-entry into the park with a hand stamp.
3. re-entry into the parking lot costs $2.
4. food and drink are allowed in the outside picnic area.

friend alisa, bailey, chelley, and diana visited a theme park. two hours after entering the park, they decided they needed some water to drink.

which girl made the most financially responsible decision?

(assume there is no tax on any of the purchases.)
a.
diana left the park in her car, bought two $3 water bottles at the corner store, then re-entered the parking lot.

b.
alisa bought two $5 water bottles inside the park.

c.
bailey bought one $5 water bottle inside the park and refilled it once at a water fountain.

d.
chelley bought two $1 water bottles and left them in her car in the parking lot.

It appears that people who are mildly obese are less active than leaner people. one study looked at the average number of minutes per day that people spend standing or walking. among mildly obese people, the mean number of minutes of daily activity (standing or walking) is approximately normally distributed with mean 376 minutes and standard deviation 64 minutes. the mean number of minutes of daily activity for lean people is approximately normally distributed with mean 528 minutes and standard deviation 107 minutes. a researcher records the minutes of activity for an srs of 7 mildly obese people and an srs of 7 lean people. use z-scores rounded to two decimal places to answer the following: what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 mildly obese people exceeds 420 minutes? what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 lean people exceeds 420 minutes?