In an initial drugs test, 5.8% of job applicants tested negative. It is claimed that now the rate is lower. A random sample of 1520 current job applicants ended in 58 negative results.Construct a 95% confidence interval for p, the true proportion of negative results in the population (classical form). Conduct a statistical test of hypothesis on this claim at the 0.01 level of significance, by the same 5 steps .Step 1. Hypotheses and significance level: H0: Ha: a =Step 2. Test Statistic and its sampling distribution under H0:Step 3. Observed value of the test statistic:Step 4. P-value under H0:Step 5. Decision and conclusion (interpretation of the result):

When the sample size is more than 30, then we say that the given test is a large sample test. When…

Answered: In an initial drugs test, 5.8% of job…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In an initial drugs test, 5.8% of job applicants tested negative. It is claimed that now the rate is lower. A random sample of 1520 current job applicants ended in 58 negative results.

Construct a 95% confidence interval for p, the true proportion of negative results in the population (classical form).
Conduct a statistical test of hypothesis on this claim at the 0.01 level of significance, by the same 5 steps .
Step 1. Hypotheses and significance level:

H₀: H_a: a =

Step 2. Test Statistic and its sampling distribution under H₀:

Step 3. Observed value of the test statistic:

Step 4. P-value under H₀:

Step 5. Decision and conclusion (interpretation of the result):

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