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can yoou help me? 1. The population of SULU Hornbill (one of the endangered bird species in the Philippines) has a standard deviation of 40.

can yoou help me?

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1. The population of SULU Hornbill (one of the endangered bird species in the Philippines) has a standard deviation of 40. An environmental researcher wants to construct 90% confidence interval if the sample size is 150 and the sample mean is 65. (a) What is the margin of error? (b) What is the lower limit of the interval estimate? (c) What is the upper limit of the interval estimate? (d) What is the length of the confidence interval

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