Dylan computed a statistical power for his experiment to be 0.7. What is the value of Beta (B)? 0.3? 0.7? 70%? 0.49?
The statistical power for Dylan’s experiment is 0.7.
The value of beta
can be obtained as,
Therefore, the value of beta is 0.3.
Dylan computed a statistical power for his experiment to be 0.7. What is the value of...
please answer question number 6 thank you
"You computed statistical power for your experiment to be 0.7, what is the value of Beta (8)?:- Beta = 70% Beta = 0.49 Beta = 0.7 Beta = 0.3 QUESTION 6 Using an independent samples t-test a researcher obtains a t-statistic of 2.316, he rejects the null at the 2 tailed alpha level of 0.05. Estimate N1-N2 (Total N Total number of subjects): less than 8 8 or more 10 or more less...
Questions 107-110 107. If Dylan gives his brother 25% of his money, then his brother will have $90. If Dylan's brother gives Dylan of his money, then Dylan will have $118. What is the initial amount of money Dylan has? A. $90 B. $96 C. $100 D. $112
(a) What would be an acceptable p-value in performing statistical analyses following an experiment? (b) Why do we choose this p-value versus any other p-value. (c) What would the results be by raising or lowering the p-value from the one you stated above? (Would lowering or raising the p-value be more or less stringent in failing to reject the null hypothesis?)
What happens to statistical power when variance (e.g., variability in the scores) increases? Power decreases Power is unaffected Power increases
1. (a) Bob Dylan plays a note of frequency f=450Hz on a harmonica while riding his bicycle towards a stationary observer. If Bob is traveling at 4m/s relative to the observer, what frequency does the observer hear? (b) The observer plays a note of frequency f=450Hz on her harmonica wile Bob is riding towards her (Bob continues to play his harmonica as in part a). What beat frequency will the observer perceive when she hears the resulting combination of the...
Bernard ran an experiment to test optimum power and time settings for microwave popcorn. His goal was to deliver popcorn with fewer than 7% of the kernels left unpopped, on average. He determined that power 9 at 4 minutes was the best combination. To be sure that the method was successful, he popped 8 more bags of popcorn (selected at random) at this setting. All were of high quality, with the percentages of unpopped kernels shown below. 5.5,4.8,11.5,2.3,2.5,6.8,4.1,6.8 Does this...
On a certain portion of an experiment, a statistical test result yielded a p-value of 0.21. What can you conclude? A. 2(0.21) = 0.42 < 0.5; the test is not statistically significant. B. If the null hypothesis is true, one could expect to get a test statistic at least as extreme as that observed 21% of the time, so the test is not statistically significant. C. 0.21 > 0.05; the test is statistically significant. D. If the null hypothesis is...
What factor is directly related to the statistical power of an analytic study? The choice of the control group Confounding The epidemiologic measure calculated Sample size More than one answer listed
t=?
P-value=?
Nate ran an experiment to test optimum power and time settings for microwave popcorn. His goal was to deliver popcorn with fewer than 11% of the kernels left unpopped, on average. He determined that power 9 at 4 minutes was the best combination. To be sure that the method was successful, he popped 8 more bags of popcorn (selected at random) at this setting. All were of high quality, with the percentages of unpopped kernels shown below. 5.1,...
What do the following phrases mean (incorporate statistical terms)? 1. "Statistical power is how big your research budget is" 2. "With living organisms, if you do something different to their environment, some of them will do poorly, while others won’t be affected or even do better. So I focus less on the mean than I do on how the spread of the data changes"