A marketing manager for a cell phone company claims that more than 35% of children age 10 have cell phones. In a random sample of 5000 it is found that 1805 had cell phones. Can you conclude that the manager's claim is true

Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4

Let hh represent the number of hummingbirds and ss represent the number of sunbirds that must pollinate the colony so it can survive until next year. 6h+4s > 746h+4s> 74 this year, 88 hummingbirds pollinated the colony. what is the least number of sunbirds that must pollinate the colony to ensure that it will survive until next year?

What are the solutions of the following system? y=-2x^2 y=x-2