Question 4 The Department of Energy wants to determine the percentage of mining firms that follow energy saving production processes. A random sample of 250 mining firms was selected and it was found that 95 out of 250 firms follow these practices. Estimate with 99% confidence, the percentage interval of mining firms that practice the energy saving production processes. Use a critical value of 2,58.

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Question 4
The Department of Energy wants to determine the percentage of mining firms that follow energy
saving production processes. A random sample of 250 mining firms was selected and it was
found that 95 out of 250 firms follow these practices.
Estimate with 99% confidence, the percentage interval of mining firms that practice
the energy saving production processes. Use a critical value of 2,58.
Transcribed Image Text:Question 4 The Department of Energy wants to determine the percentage of mining firms that follow energy saving production processes. A random sample of 250 mining firms was selected and it was found that 95 out of 250 firms follow these practices. Estimate with 99% confidence, the percentage interval of mining firms that practice the energy saving production processes. Use a critical value of 2,58.
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