Question

Assume simple random sampling. Calculate the 95% confidence interval estimate for the population mean for each of the following. a. N = 1500; n = 70; s = 10; x? = 144 b. N = 1675; n = 80; s² = 81; x? = 232.4 c. N = 5200; n = 250; s² = 124; x? = 59.7 a. 141.616 < ? < 146.384 (Round to three decimal places as needed.)

          Assume simple random sampling. Calculate the 95% confidence interval estimate for the population mean for each of the following.
a. N = 1500; n = 70; s = 10; x? = 144
b. N = 1675; n = 80; s² = 81; x? = 232.4
c. N = 5200; n = 250; s² = 124; x? = 59.7
a. 141.616 < ? < 146.384
(Round to three decimal places as needed.)

Assume simple random sampling. Calculate the 95% confidence interval estimate for the population mean for each of the following.
a. N = 1500; n = 70; s = 10; x? = 144
b. N = 1675; n = 80; s² = 81; x? = 232.4
c. N = 5200; n = 250; s² = 124; x? = 59.7
a. 141.616 < ? < 146.384
(Round to three decimal places as needed.)

Added by Natalia G.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Kumar Abhinav

02/28/2022

Step 1

Calculate the t-value for a 95% confidence level with 69 degrees of freedom: t = 1.995 Margin of error = t * (S / sqrt(n)) = 1.995 * (10 / sqrt(70)) = 1.995 * (10 / 8.367) = 1.995 * 1.194 = 2.383 Show more…

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Assume simple random sampling. Calculate the 95% confidence interval estimate for the population mean for each of the following. a. N = 1500; n = 70; s = 10; x̄ = 144 b. N = 1675; n = 80; s² = 81; x̄ = 232.4 c. N = 5200; n = 250; s² = 124; x̄ = 59.7 a. 141.616 < μ < 146.384 (Round to three decimal places as needed.)