In point estimation

a data from the population is used to estimate the population parameter

b data from the sample is used to estimate the population parameter

c data from the sample is used to estimate the sample statistic

d the mean of the population equals the mean of the sample

all it means is function 3

$9.89

step-by-step explanation:

9.90 = p x .06 x .25 (3/12 changed to a decimal)

9.90 = p x 0.015

9.90 - 0.015 = p

9.89 = p

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°

c > -10.55

step-by-step explanation: