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A random sample of 83 investment portfolios managed by Kendra showed that 62 of them met the targeted annual percent growth. A random sample of 112 portfolios managed by Lisa showed the 87 met the targeted annual percent growth. Find a 99% confidence level for the different in the proportion of the portfolios meeting target goals managed by Kendra compared to those managed by Lisa. Is there a difference in the proportions at the 99% confidence level? Explain.
How much will this ordinary annuity be worth at the end of the 12 years?
a total of 26 bills are in a cash box. some of the bills are one-dollar bills, and the rest are five-dollar bills. the total amount of cash in the box is $50. find the number of each type of bill in the cash box.
Important information about Translation, Let a be a fixed vector in R2. A mapping of the form
the speed of a passenger train is 14 mph faster than the speed of a freight train. The passenger train travels 280 miles in the same time it takes the freight train to travel 210 miles. Find the speed of each train.
A hot-air balloon exerts a 1200-lb pull on a tether line at 45 degree angle with the horizontal. Resolve the vector B into components.
How large a sample size will need to be selected if we wish to have a 95% confidence interval that is accurate to within 1%.
Probability density function sample question, Let E be the event that the number which comes up when a single die is tossed is divisible by 3. Let X be the number of times that event E occurs in 3 tosses of the die
Students log on to California Virtual Campus with a user name consisting of eight characters: four uppercase letters of the alphabet followed by four digits.
What is the probability of getting an A on the exam? What is the probability of getting an A in the course?
Tami goes shopping for a snow blower. She knows nothing about snow blowers. She is equally likely to decide on any of the choices available to her. The snow blower choices are a 5-horsepower and a 10 horse power model, and each is available with a..
Two marbles are drawn without replacement from a box with 3 white, 2 green, 2 red, and 1 blue marble. Find the probability.
He plans to pay the loan back in full in 5 months using his income tax refund. He can go to a finance company that will charge him 18% or to his uncle, who has greed to charge him 9%. Find the difference in the interest charges.
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