The Pew Internet and American Life Project reports that American adults send a mean of 20 text messages per day. A random sample of 60 American adults showed a mean of 22 text messages per day. Assume that the population standard deviation is 20 text messages. Test using the level of significance α =0.01 whether the population mean number of text messages per day is greater than 20

`1234567890-=/*-qwertyuiop[]asdfghjkl; '\\zxcvbnm,./+ /

f(x) is the value of the function. b is the value of the function when x equals zero or the y-coordinate of the point where the line crosses the y-axis in the coordinate plane.

step-by-step explanation:

hope this !

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3

im pretty sure it would be 5 am, hope that , and give brainliest and guys if this is right then press the button and give 5 stars