1. The number of grade 11 students of 32 schools in Benguet selected at random are given below. Assume that the population standard deviation a=165.1, find (a) point estimate of the population mean and (b) interval estimate of the population mean with 95% confidence interval. 211 621 318 417 384 367 836 638 396 408 203 425 211 515 374 159 224 280 224 324 337 289 121 395 180 412 121 431 134 356 176 539

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