Question

Let the result of measurements to determine the spring constants of a sample drawn from a very large number of valve springs manufactured be obtained as: N = 40, x? = 152.5 N/cm, s = 0.889 N/cm a) Determine the range of spring constants with a "confidence level" of ±95 %. b) Determine the confidence interval of the mean value with a "confidence level" of ±95 %. c) Determine the % probability of having springs with spring constants greater than 154 N/cm.

Name: Let the result of measurements to determine the spring constants of a sample drawn from a very large number of valve springs manufactured be obtained as: N = 40, x? = 152.5 N/cm, s = 0.889 N/cm a) Determine the range of spring constants with a "confidence level" of ±95 %. b) Determine the confidence interval of the mean value with a "confidence level" of ±95 %. c) Determine the % probability of having springs with spring constants greater than 154 N/cm.
Uploaded: 2021-12-28T00:26:14-08:00
Duration: 3 min 49 s
Channel: Rosina Dapaah

          Let the result of measurements to determine the spring constants of a sample drawn from a very large number of valve springs manufactured be obtained as: N = 40, x? = 152.5 N/cm, s = 0.889 N/cm a) Determine the range of spring constants with a "confidence level" of ±95 %. b) Determine the confidence interval of the mean value with a "confidence level" of ±95 %. c) Determine the % probability of having springs with spring constants greater than 154 N/cm.

Let the result of measurements to determine the spring constants of a sample drawn from a very large number of valve springs manufactured be obtained as: N = 40, x? = 152.5 N/cm, s = 0.889 N/cm a) Determine the range of spring constants with a "confidence level" of ±95 %. b) Determine the confidence interval of the mean value with a "confidence level" of ±95 %. c) Determine the % probability of having springs with spring constants greater than 154 N/cm.

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Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

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12/28/2021

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Let the result of measurements to determine the spring constants of a sample drawn from a very large number of valve springs manufactured be obtained as: N = 40, x = 152.5 N/cm, s = 0.889 N/cm a) Determine the range of spring constants with a "confidence level" of ±95 %. b) Determine the confidence interval of the mean value with a "confidence level" of ±95 %. c) Determine the % probability of having springs with spring constants greater than 154 N/cm.