In the US, 21% of households use a clothesline to dry their laundry. Capucine would like to survey households that use a clothesline, so she plans to contact randomly selected US households until she finds ones that use one. Let F be the number of households Capucine contacts to reach the first household that uses a clothesline. Find the mean and standard deviation of F. Find the mean and standard deviation of F ANSWER: Mean: 4.84
Standard deviation: 4.24

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

Astudent is determining the influence of different types of food on the growth rate of spiders. she feeds one group of spiders two caterpillars twice a week. the other group received similarly-sized beetles twice a week. she records the amount of time required for individuals to reach sexual maturity. her hypothesis is that the spiders feeding on caterpillars will have a faster growth rate because caterpillars have a higher protein content compared to beetles. in this experiment, what is the dependent variable? spiders assigned to different feeding groups. time required to reach sexual maturity number of prey items fed twice a week. growth rates of each group.

If jklm is a trapezoid, which statements must be true?