Question

In a factory, the weight of the concrete poured into a mold by a machine follows a normal distribution with a mean of 522.7 kg and a variance of 100 kg squared. What is the probability that the weight of concrete poured into a mold is less than 521 kg? Report answer to 4 decimal places.

Name: in a factory the weight of the concrete poured into a mold by a machine follows a normal distribution with a mean of 5227 kg and a variance of 100 kg squared what is the probability that the 95523
Uploaded: 2023-11-23T21:55:59-08:00
Duration: 1 min 14 s
Channel: Ivan Kochetkov
Description: in a factory the weight of the concrete poured into a mold by a machine follows a normal distribution with a mean of 5227 kg and a variance of 100 kg squared what is the probability that the 95523

          In a factory, the weight of the concrete poured into a mold by a machine follows a normal distribution with a mean of 522.7 kg and a variance of 100 kg squared. What is the probability that the weight of concrete poured into a mold is less than 521 kg? Report answer to 4 decimal places.

Added by Christina S.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Ivan Kochetkov

11/23/2023

Step 1

The z-score formula is: \[ z = \frac{X - \mu}{\sigma} \] where \( X \) is the value we want to standardize (521 kg), \( \mu \) is the mean (522.7 kg), and \( \sigma \) is the standard deviation, which is the square root of the variance (since the variance is 100 Show more…

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In a factory, the weight of the concrete poured into a mold by a machine follows a normal distribution with a mean of 522.7 kg and a variance of 100 kg squared. What is the probability that the weight of concrete poured into a mold is less than 521 kg? Report answer to 4 decimal places.