1. Use the frequency distribution to find the expected value (mean), variance, and the standard deviation. Number of downloads (X) 27 28 30 31 32 Probability (P(X)) 0.15 0.2 0.3 0.25 0.1 2...
1. Use the frequency distribution to find the expected value (mean), variance, and the standard deviation. Number of downloads (X) 27 28 30 31 32 Probability (P(X)) 0.15 0.2 0.3 0.25 0.1 2...
A regulation for riding a certain amusement park ride requires hat a child be between 30 inches and 50 inches tall. Please help. I got this question wrong. Thank you.
In a community, 2/3 of all of the men are married to 3/5 of all of the women. What fraction of the entire community is married? Help! I can't figure out how to do this....
The numerator of a certain fraction is 5 less than the denominator. Please help. Thank you
a. 8.0 cm b. 12 cm c. 20 cm d. 16 cm
A motorboat takes 4 hours to travel 192 km going upstream. The return trip takes 3 hours going downstream. What is the rate of the boat in still water and what is the rate of the current?
Last year, Lucy had $10,000 to invest. She invested some of it in an account that paid 10% simple interest per year, and she invested the rest in an account that paid 7% simple...
I have to know about card courses whether it is useful during placement it not
If a contained ideal gas decreases the volume by a factor of two and then triples the temperature, what happens to the pressure? a. It goes up by a factor of 2 b. It goes up by...
On a phase diagram there is a triple point, where solids liquids and gasses all exist at the same temperature and pressure. If I decrease the temperature but increase the pressure from this triple...
i have to keep a minimum of 75,000 widgets and a maximum of 280,000 widgets in inventory. I want to keep 75% of the minimum and maximum in inventory. How much is that? How do you do the math on...
An inverted pyramid is being filled with water at a constant rate of 70 cubic centimeters per second. The pyramid, at the top, has the shape of a square with sides of length 3 cm, and the height is...
A police car is located 30 feet to the side of a straight road. A red car is driving along the road in the direction of the police car and is 210 feet up the road from the location of the...
I am doing a study guide for sociology 101
Ok, so I know this seems like a really basic and easy question and im sure it's easy to figure out. I calculated 2 different answers that could give me the real answer but I dont know if I did any...
A chord of length 12.1 cm is drawn in a circle. The distance between the centre of the circle and the midpoint of the chord is 5.2 cm. Calculate, correct to the nearest mm, the length of the radius...
do this in substitution
Don't understand where to begin!
a scientist wanted to test a theory about gender and shopping behavior. He divided a group f 100 people into 50 males and 50 females and recorded the amount of money spent on clothes shopping over...
A dragonfly can move 12 times as fast as a cockroach. If the dragonfly flies 33 miles per hour faster than the cockroach can crawl, write an equation that best describes the speed of the dragonfl...