May have three bookshelves in her bedroom each Shelf has 12 science books and 18 Adventure book create an equation to find the total number of book in May's room Question solved general 5 months ago 338
Assume an auditor has 50,000 accounts and wants to know the average account payable’s value. They decide to pull a sample and want the results to be within $46 of the correct figure. The standard deviation they are expecting from the sample is 250 dollars. How many accounts do they need to check? Round up to whole number of cases. Question solved general 5 months ago 2047
In a school, 80 students practice volleyball, 120 soccer, 20 both sports and 70 students, no sport. Choosing a student at random. What is the probability that he only practices volleyball? Question solved general 5 months ago 430
a box has 60 chocolates. If María eats 2/5 and Ángela 3/7, how many chocolates did each of them eat? how many are left in the box? Question solved general 5 months ago 2375
determine in general form the rule of a quadratic function whose zeros are -8 and 2 and whose minimum is -50 Question solved general 5 months ago 296
there are 28 students in a class, 12 boys and 16 girls. an experiment involves choosing two students at random from the class. let A be the event: "the first chosen is a girl" and B the event "the second chosen is a boy." a) find P(A) and P(B) and P(A\B) Question solved general 5 months ago 2008
seven food trucks are competing to see how many customers visit their trucks per day in a busy part of the city. The average number of customers that visit each food truck per day in 41. the sum is found to be 358. calculate the variance to this data Question solved general 5 months ago 816
If Leonardo shares 20 3/5 among his friends and each one receives 103/30. How many friends does Leonardo have? Question solved general 5 months ago 2006
Mary is 9 cm lower than Misa. Misa is 5 cm taller than Mandy. Their heights togrther sum 484 cm. How tall is Mandy Question solved general 5 months ago 1553
2. A credit and insurance organization has developed a new, high-tech method of training new sales staff. The company obtained a sample of 20 employees trained in the original way and found average daily sales of L16,512, with a sample standard deviation of L783.12. They also took a sample of 18 employees trained with the new method and found an average daily sales of L16,944, with a sample standard deviation of L596.16. For α = 0.01, can the company conclude that average daily sales increase with the new plan? Question solved general 5 months ago 2358