John calipari, head basketball coach for the 2012 national champion university of kentucky wildcats, is the highest paid coach in college basketball with an annual salary of $5.4 million (usa today, march 29, 2012). the sample below shows the head basketball coach's salary for a sample of 10 schools playing ncaa division 1 basketball. salary data are in millions of dollars.
university coach's salary university coach's salary
indiana 2.2 syracuse 1.5
xavier .5 murray state .2
texas 2.4 florida state 1.5
connecticut 2.7 south dakota state .1
west virginia 2.0 vermont .2
a. use the sample mean for the 10 schools to estimate the population mean annual salary for head basketball coaches at colleges and universities playing ncaa division 1 basketball (to 2 decimals). b. use the data to estimate the population standard deviation for the annual salary for head basketball coaches (to 4 decimals). c. what is the 95% confidence interval for the population variance (to 2 decimals)? (d) what is the 95% confidence interval for the population standard deviation (to 2 decimals)?

Cone w has a radius of 8 cm and a height of 5 cm. square pyramid x has the same base area and height as cone w. paul and manuel disagree on how the volumes of cone w and square pyramid x are related. examine their arguments. which statement explains whose argument is correct and why? paul manuel the volume of square pyramid x is equal to the volume of cone w. this can be proven by finding the base area and volume of cone w, along with the volume of square pyramid x. the base area of cone w is π(r2) = π(82) = 200.96 cm2. the volume of cone w is one third(area of base)(h) = one third third(200.96)(5) = 334.93 cm3. the volume of square pyramid x is one third(area of base)(h) = one third(200.96)(5) = 334.93 cm3. the volume of square pyramid x is three times the volume of cone w. this can be proven by finding the base area and volume of cone w, along with the volume of square pyramid x. the base area of cone w is π(r2) = π(82) = 200.96 cm2. the volume of cone w is one third(area of base)(h) = one third(200.96)(5) = 334.93 cm3. the volume of square pyramid x is (area of base)(h) = (200.96)(5) = 1,004.8 cm3. paul's argument is correct; manuel used the incorrect formula to find the volume of square pyramid x. paul's argument is correct; manuel used the incorrect base area to find the volume of square pyramid x. manuel's argument is correct; paul used the incorrect formula to find the volume of square pyramid x. manuel's argument is correct; paul used the incorrect base area to find the volume of square pyramid x.

The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?

Select the two pairs of figures that are similar.