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Question: The following table was presented in an article summarizing a study to compare a new drug to a standard drug and to a placebo Which, if any baseline characteristics are significantly different (at the 0.05 level of significance) between treatment groups
A) Disease stage
B) Annual income
C) Percentage with insurance
D) Age
E) A& C
F) B& D
Characteristic New drug Standard drug Placebo P
Age, Years 45.2(4.8) 44.9(5.1) 42.8 (4.3) 0.5746
% Female 51% 55% 57% 0.1635
Annual income, $0005 59.5(14.3) 63.8(16.9) 58.2(13.6) 0.4635
% with insurance 87% 65% 82% 0.0352
Disease Stage
Stage 1 35% 18% 33%
Stage 11 42% 37% 47%
Stage 111 23% 51% 20%
The number of breakdowns is dependent on the shift, because the test value 11.649 is less than the critical value of 12.592.
Indicate with Yes or No whether the given statement could apply to a data set consisting of 1,000 values that are all different. a. The 29th percentile is greater than the 30th percentile.
the population of completion times is 10.4 minutes, what is the minimum sample size needed for the managers to be 95% confident that their estimate is within 2.2 minutes of u?
If we repeated this procedure many, many times, only 5 percent of the 95 percent confidence intervals would fail to include the mean Math SAT score of the population of all students at this college.
To see if his belief is substantiated, conduct the test at a suitable significant level. State the assumptions made. see if his belief is substantiated, conduct the test at a suitable significant level. State the assumptions made.
What critical value t* from table D should be used to calculate the margin of error for a confidence interval for the mean of the population in each of the following situations?
Proportion of out-of-tolerance items is greater than 0.02, the robot will be overhauled. Otherwise it will be allowed to continue operating. What is the probability that a satisfactory robot will be overhauled unnecessarily?
Forty percent of the readings are within 0.5 V of the true value. Estimate the standard deviation for the meter. What is the probability of an error of 0.75 V?
What is the probability that exactly 9 of the children are cured? Report your answer to four decimal places, rounding in the usual way?
Based on our sample, how do you interpret the results and what do these results suggest about the population means for male and female average salaries?
At the 5% level of significance, can we infer that the difference in the level of satisfaction with service between the two branches is wider than 5 p.c. points?
Many times researchers preselect the value of alpha of .01 or .001. What are the factors that allow selection of either of those levels of significance?
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