Given following Z-values (test stats) and critical values, what is the decision of the null hypothesis (two-sided test)? Critical value: At 1% significance level: 2.58 At 5% significance level: 1.96 At 10% significance level: 1.645 1. Z stats equals to 1.57 (test at 10% significance level) 2. Z stat equals to 1.82  (test at  5% significance level) 3. Z stat equals to 2.65 (test at 1% significance level)

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A:

Q: onsider a drug testing company that provides a test for marijuana usage. Among 344 tested​…

A: The provided information is  n=344x=26α=0.01p^=xn=26344=0.075 a. The null and alternative hypothesis…

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A: The z statistic is Z=(p-mean)/standard deviation Thus, the z statistic is -2.01

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A: Given :

Q: What is the P value?

A: We have given that  p0=39/(32+39)=0.5493 α=0.05

Q: What is the test statistic? What is P-value? Reject or Fail to reject?

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.