1s A stroke vietim should receive medical attention within 12 minuten. What prop

Question

1s A stroke vietim should receive medical attention within 12 minuten. What proportion of emerteney patients will get attention within 12 minutest (A) 40% (13) 44% (C) 80% (D) 20% (E) 12.5% A 96% confidence interval for a population miean is constructed using x ± z,e,. what is an appropriate value for Zs? 19, (A) 1.96 (B) 1.75 (C) 1.64 (D) 2.0S (E) 1.21s Use this information for problems 20 and 1. The waiting times at a bank are normally distributed with a mean of 4 minutes and a standard deviation of 1.8 minute. 20. What is the approximate 45h percentile waitng time? (A) 3.8 min (B) 4.2 min (C) 45 min (D) 5.8 min (E) 2.2 min 21. Consider the following seatter plots with the indicated correlation coefficients. ri What is the relationship among ri.rs and rs2 A) sr (B) ris (C) r

Explanation / Answer

Solution:-

19) 96% confidence interval for a population mean having zalpha/2 is + 2.05.

p-va;ue for the 96% is 0.02 and 0.98

z-score for the p-values = + 2.05.

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