Multiple choice 1) A drug company is studying the effect of a new drug. In its clinical trials, the researcherused a significance level of .01. By using this significance level instead of the more usual.05, the researcher hasa) Expanded the critical regionb) Increascd the critical valuec) Increased the probability of rejecting the Ho2) When a researcher rejects the null hypothesisa) The obtained statistical value is larger than the critical valueb) The obtained statistical value is smaller than the critical valuec) P value is smaller than the significant level3) A 95% confidence interval was calculated to be (15, 21). This means that if 100 suchconfidence intervals (CIs) were constructed thena) 95% of the CIs will be (15,21)b) 95% of the CIs will include the population meanc) The population mean would lie between (15,21) 95 times.d) The population mean would be found in about 95 of the CIs.

Answered: 1) A drug company is studying the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Concept explainers

Question

Multiple choice

1) A drug company is studying the effect of a new drug. In its clinical trials, the researcher
used a significance level of .01. By using this significance level instead of the more usual
.05, the researcher has
a) Expanded the critical region
b) Increascd the critical value
c) Increased the probability of rejecting the Ho
2) When a researcher rejects the null hypothesis
a) The obtained statistical value is larger than the critical value
b) The obtained statistical value is smaller than the critical value
c) P value is smaller than the significant level
3) A 95% confidence interval was calculated to be (15, 21). This means that if 100 such
confidence intervals (CIs) were constructed then
a) 95% of the CIs will be (15,21)
b) 95% of the CIs will include the population mean
c) The population mean would lie between (15,21) 95 times.
d) The population mean would be found in about 95 of the CIs.

Expert Solution

Step 1

Since you have asked multiple questions, we will solve the first question for you. If you want any specific question to be solved then please specify the question number or post only that question.

When the significance level is reduced from 0.05 to 0.01, then the critical region would decrease, but does not expand. The level of significance $(α = 0.01)$ is the probability of committing type I error, that is probability of rejecting the true null hypothesis. If level of significance is decreased then the probability of type I error also decreases, that probability of rejecting $H_{0}$ decreases.

Step by step

Solved in 2 steps

Knowledge Booster

$Basics of Inferential Statistics$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions