A study was recently conducted to estimate the mean cholesterol for adult males over the age of 55 years. The following random sample data were observed: 245 304 135 202 300 196 210 188 256 390 Given this information, what is the point estimate for the population mean? Question 2 options: About 242.6 ±102 About 73.35 Can't be determined without knowing the confidence level.

point estimate = 242.6

Step-by-step explanation:

From the information given,

Number of adults sampled = 10

Mean = sum of the ages/number of adults sampled

Mean = (245 + 304 + 135 + 202 + 300 + 196 + 210 + 188 + 256 + 390)/10 = 242.6

The sample mean is the point estimate for the population mean

The confidence level is required to determine the margin of error between the point estimate and the population mean

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°