In a test of physical fitness, a group of men ages 65 and older from a local

retirement community were told to do as many sit-ups as they could. It is known the population meanis 20 with The scores for the men from the retirement community are given below. Use a two-tailed rejection region with a total area of 0.05. What is the sample mean?

24 25 10 23 18 29 47 32

19 24 20 28 21 20 27 25

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap

Find the area of just the wood portion of the frame. this is called a composite figure. you will need to use your values from problem #2need all exepct 4 answerd if you can

:malik received a $300 gift card from his grandparents and is using it only to pay for his karate lessons, which cost $30 per month. determine what amount, in dollars, remains on the card after 8 months.