You work for a company that produces electronics with integrated circuits. One of your products is called a "shift register." This product is designed to automatically shut down if its operating temperature exceed 175 degrees Celsius. The manufacturing process has been designed to have a standard deviation of 0.4 degrees Celsius. You test a random sample 20 shift registers, and you record the following shut- down temperatures. Construct a 98% confidence interval for the overall mean shutdown-temperature. 175.14 174.25 175.18 175.59 174.93 175.56 174.46 174.6 174.83 175.2 174.87 174.14 174.51 174.52 175.46 175.11 175.24 175.05 174.97 174.4 (Checksum: 3498.01) a) Find the critical value and oa Critical Value: b) Find the confidence interval:

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You work for a company that produces electronics with integrated circuits. One of your products is called
a "shift register." This product is designed to automatically shut down if its operating temperature exceeds
175 degrees Celsius. The manufacturing process has been designed to have a standard deviation of
o = 0.4 degrees Celsius. You test a random sample 20 shift registers, and you record the following shut-
down temperatures. Construct a 98% confidence interval for the overall mean shutdown-temperature.
175.14
174.25
175.18
175.59
174.93
175.56
174.46
174.6
174.83
175.2
174.87
174.14
174.51
174.52
175.46
175.11
175.24
175.05
174.97
174.4
(Checksum: 3498.01)
a) Find the critical value and oã .
Critical Value:
b) Find the confidence interval:
Transcribed Image Text:You work for a company that produces electronics with integrated circuits. One of your products is called a "shift register." This product is designed to automatically shut down if its operating temperature exceeds 175 degrees Celsius. The manufacturing process has been designed to have a standard deviation of o = 0.4 degrees Celsius. You test a random sample 20 shift registers, and you record the following shut- down temperatures. Construct a 98% confidence interval for the overall mean shutdown-temperature. 175.14 174.25 175.18 175.59 174.93 175.56 174.46 174.6 174.83 175.2 174.87 174.14 174.51 174.52 175.46 175.11 175.24 175.05 174.97 174.4 (Checksum: 3498.01) a) Find the critical value and oã . Critical Value: b) Find the confidence interval:
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