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 Expanded the critical region Increased the critical value Increased the probability of rejecting the Ho When a researcher rejects the null hypothesis The obtained statistical value is larger than the critical value. The obtained statistical value is smaller than the critical value P-value is smaller than the significant level. A 95% confidence interval was calculated to be (15, 21). This means that if 100 such confidence intervals (CIs) were constructed, then 95% of the CIs will be (15,21) 95% of the CIs will include the population mean The population mean would lie between (15,21) 95 times. The population mean would be found in about 95 of the CIs. If you obtained a test score of 78 on a test with your class's average test score is 70 and SD is 4, what proportion of scores are lower than yours? 5% 95% 5% It cannot be determined from the information provided. If you obtained a test score of 78 on a test with an average test score of your class is 70, and SD is 4. If your class have 36 students in total, what is the 95% CI range in estimate the test score of the population [70-2.0644, 70+2.0644] [72-2.0644, 72+2.0644] [70-2.0640.67, 70+2.0640.67] [72-2.0640.67, 72+2.0640.67] A researcher found the correlation between IQ scores and reading ability is 0.78. The people who have lower IQ scores also tend to have lower reading ability. The people who have lower IQ scores are predicted to have a lower reading ability. Student A has a higher IQ score than student B, so student A will also have a higher reading ability than student B.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

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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

Expanded the critical region
Increased the critical value
Increased the probability of rejecting the Ho

When a researcher rejects the null hypothesis

The obtained statistical value is larger than the critical value.
The obtained statistical value is smaller than the critical value
P-value is smaller than the significant level.

A 95% confidence interval was calculated to be (15, 21). This means that if 100 such confidence intervals (CIs) were constructed, then

95% of the CIs will be (15,21)
95% of the CIs will include the population mean
The population mean would lie between (15,21) 95 times.
The population mean would be found in about 95 of the CIs.

If you obtained a test score of 78 on a test with your class's average test score is 70 and SD is 4, what proportion of scores are lower than yours?

5%
95%
5%
It cannot be determined from the information provided.

If you obtained a test score of 78 on a test with an average test score of your class is 70, and SD is 4. If your class have 36 students in total, what is the 95% CI range in estimate the test score of the population

[70-2.064*4, 70+2.064*4]
[72-2.064*4, 72+2.064*4]
[70-2.064*0.67, 70+2.064*0.67]
[72-2.064*0.67, 72+2.064*0.67]

A researcher found the correlation between IQ scores and reading ability is 0.78.

The people who have lower IQ scores also tend to have lower reading ability.
The people who have lower IQ scores are predicted to have a lower reading ability.
Student A has a higher IQ score than student B, so student A will also have a higher reading ability than student B.

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