2. In a study of pet owners, it was reported that 24% celebrate their pet’s birthday. Suppose that this estimate was based on a random sample of 200 pet owners. (a) What’s the expected proportion of the population that celebrate their pet’s birthday? (b) What’s the standard deviation of sample proportions? Round to 4 decimals. (c) Would the sampling model be Normal? Explain. (d) What is the probability that the proportion of people in the sample who celebrate their pet’s birthday is less than 25%? Round to 4 decimals. (e) Based on the sampling distribution model for this scenario, we should expect about 95% of the samples to show that between % and % celebrate their pet’s birthday.

step-by-step explanation:

if u want da anser kill your teeser ifu hav wun

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

  the correct choice is marked

step-by-step explanation:

the first two graphs show multiple turning points. the last graphs matches the description in every detail.

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation: