Which statements are true?

choose exactly two answers that are correct.

dentist mean patient age mad
appiah 43 9.7
cantwell 29 13.9
singh 41 14.1

a.
dr. appiah’s patients’ ages vary more than do dr. cantwell’s patients’ ages.

b.
dr. appiah’s patients’ ages vary less than do dr. singh’s patients’ ages.

c.
dr. cantwell’s patients’ ages and dr. singh’s patients’ ages vary about the same amount.

d.
dr. singh’s patients’ ages and dr. appiah’s patients’ ages vary about the same amount.

Use this data in the problem below. follow the steps carefully. round to the nearest tenth. lot 3: week 1: 345 week 2: 340 week 3: 400 week 4: 325 step 1. jim enters the data and calculates the average or mean. step 2. jim calculates the deviation from the mean by subtracting the mean from each value. step 3. jim squares each deviation to remove negative signs. step 4. jim sums the squares of each deviation and divides by the count for the variance. step 5. jim takes the square root of the variance to find the standard deviation.

Listed in the table is the percentage of students who chose each kind of juice at lunchtime. use the table to determine the measure of the central angle you would draw to represent orange juice in a circle graph

Aswimming pool measures 22ft by 12ft and is 4ft deep. if the pool is being filled at 2.5 cubic ft per minute, how long will it take to fill the pool?