vone Uf the above a. b. c. d. e. ple size grows, confidence intervals get smalle

Question

vone Uf the above a. b. c. d. e. ple size grows, confidence intervals get smaller for a given level of confidence because: The standard error of the mean gets smaller as sample size increases. The T-statistic gets smaller as the sample size increases. Both standard errors and T statistics get smaller as the sample size increases. The T-statistic gets larger, but as it is in the denominator the value decreases. None of the above 1. New orders come into a takeout restaurant at the rate of 0.1 per minute. What, then, is the probability that less than 20 minutes elapses before the next takeout order comes in? a. 0.050 b. 0.865 C. 0.950 d. 0.049 e. None of the above

Explanation / Answer

10) Option-A

11) P(X < 20) = 1 - e^(-20 * 0.1) = 0.865

Option-B is correct.

  

  

  

  

  

  

  

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