Determine the sample size needed to estimate mu for the gives situation. E = 4,

Question

Determine the sample size needed to estimate mu for the gives situation. E = 4, sigma = 35, (1 - alpha) = 90 208 207 4 205 In an American criminal trial, the null hypothesis that the defendant is innocent and alternative hypothesis is that the defendant is guilty. Which of the following describes a Type 2 error for a criminal trial? A guilty verdict for a person who is innocent. A guilty verdict for a person who is not innocent. A not guilty verdict for a person who is guilty A not guilty verdict for a person who is innocent Which of the following would be a Type 1 error in this situation? Declaring somebody has ESP when they actually don't have ESP. Declaring somebody does not have ESP when they actually do. Analyzing the data with a confidence interval rather than a significance test. Making a mistake in the calculations of the significance test. Determine the critical value, z_0 to test the claim about the population proportion p notequalto 0.325 given n = 42 and p^hat = 0.247. Use alpha = 0.05. plusminus 1.96 plusminus 2.575 plusminus 2.33 plusminus 1.645 A local bank needs information concerning the checking account balances of its customers. A random sample 15 accounts was checked. The mean balance was $686.75 with a standard deviation of $256.20. Find a 98% confidence interval for the true mean. Assume that the account balances are normally distributed. ($326.21, $437.90) ($487.31, $563.80) ($513.17, $860.33) ($238.23, $326.41)

Explanation / Answer

30. As p-value is less than level of significance,
A) Reject H0

31. B) 1086
32. A) 1440
33. A) 208
34. C A not guilty verdict for a person who is guilty
35 Declaring guilty when somebody is not guilty
36 A 1.96
37 C ($513.17, $860.33)

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