Marisachavez15 Marisachavez15
  • 18-01-2023
  • Mathematics
contestada

Jackson Middle School would like to estimate the average number of text messages sent by 210 freshmen during school hours. If the average number of texts is 155 per hour with a standard deviation of 25, calculate the confidence interval at a 95% confidence level. O (152, 159) (146, 164) (135, 160) (125, 180)​

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