Question

For X ~normal with $\mu$ = 4, $\sigma$ = 6 and a sample size of 21, P(X < 3) = Note: round your z score to two decimals places 0.4325. 0.5675. 0.7764. 0.2236. none of the above answers are accurate because of a failed assumption.

          For X ~normal with $\mu$ = 4, $\sigma$ = 6 and a sample size of 21, P(X < 3) = 
Note: round your z score to two decimals places
0.4325.
0.5675.
0.7764.
0.2236.
none of the above answers are accurate because of a failed assumption.

For X normal with μ = 4, σ = 6 and a sample size of 21, P(X < 3) =
Note: round your z score to two decimals places
0.4325.
0.5675.
0.7764.
0.2236.
none of the above answers are accurate because of a failed assumption.

Added by Faith T.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Madhur L

06/11/2023

Step 1

Step 1: Calculate the z-score using the formula z = (X - μ) / (σ / √n), where X is the value we are interested in, μ is the mean, σ is the standard deviation, and n is the sample size. Show more…

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For X ~ normal with μ = 4 and a sample size of 21, P(X < 3). Note: Round your z score to two decimal places. 0.4325, 0.5675, 0.7764, 0.2236. None of the above answers are accurate because of a failed assumption.