The resting heart rates for 80 women aged 46–55 in a simple random sample are normally distributed, with a mean of 71 beats per minute and a standard deviation of 6 beats per minute. assuming a 90% confidence level (90% confidence level = z-score of 1.645), what is the margin of error for the population mean? remember, the margin of error, me, can be determined using the formula mc014-1.jpg.

The margin of error is

Step-by-step explanation:

The margin of error represents the maximum expected difference between the true parameter and the estimated parameter.

Mathematically, it is calculated as,

where,

z = z score of the confidence interval,

σ = standard deviation,

n = sample size.

Putting the values,

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation: