The scores on a certain test are normally distributed with a mean score of 43 and a standard deviation of 3. what is the probability that a sample of 90 students will have a mean score of at least 43.3162?
0.8413
0.3174
0.1587
0.3413

You and a friend went to the movies.you spent half your money on tickets. then you spent 1/4 of the money on popcorn, $2 on candy, and $3 on a soda. if you have $1 left, hiw much money did u take to the movies?

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.a city water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from thetank so that it has 5 of the water that it started with: the technician must removemore gallons of water for the tank to have 5 of the water that it started with.