Mr. Shane wanted to estimate the average time it takes for students to get to school she took a random sample of 50 students and asked how long it Took to get to school the meantime was 10 minutes what they standard deviation of eight minutes find a 95% confidence interval to estimate the true mean time takes for students to get to school

your answer is 23/2 - 13.5

step-by-step explanation:

7/2 evaluates to

multiply x and 4.5

multiply x and 1

the x just gets copied along.

the answer is x

x

4.5*x evaluates to 4.5x

multiply 3 and 4.5x

multiply 1 and x

the x just gets copied along.

x

4.5*x*3 evaluates to 13.5x

7/2-4.5*x*3 evaluates to

  + 8 =

the answer is

7/2-4.5*x*3+8 evaluates to

answer: it's d

step-by-step explanation:

if you was gonna solve for a, a is a   < -12

step-by-step explanation: