Lexie is a waitress. She believes that she earns more tips, on average, when she curls her hair before work rather than pulling it back in a ponytail. In order to investigate this belief, she writes “curls” on 30 slips of paper and “ponytail” on 30 slips of paper, puts them in a hat and mixes them well. Each time she gets ready for work she randomly selects one piece of paper to determine how she should do her hair that day. Using the data she collects, she carries out a t test for a difference in means in order to test these hypotheses:

Assuming the true difference (Curls – Ponytail) in the mean amount of tips received is 0, there is a 0.0375 probability that Lexie would observe a difference in sample means as greater or greater than she did by chance alone.

Step-by-step explanation:

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)

answer: i realy don't get it that much can you me figer it out pleas you

step-by-step explanation: