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Let's say you're testing two flu drugs a and b. Drug a works on 41 people out of a sample of 195. Drug b works on 351 people in a sample of 605. Are the two drugs compatible? Use a 5% alpha level
a. Null hypothesis
b. Alternative hypothesis
c. Find the certificate cut off score
d. Reject the bull and accept the alternate if
e. Fail to reject the null it
f. Give the value of the test statistic
h. Are the two drugs compatible ( yes or no)
One table has a standard deviation of $50 while the other has a standard deviation of $150. What conclusion can be drawn from the data?
a bank manager wishes to provide prompt service for customers at the banks drive-up window. the bank currently can
Question 1: What is the standard error of the mean in this experiment? Question 2: What is the probability that the sample mean is between $3.78 and $3.86?
a short quiz has two truefalse questions and one multiple choice question with four choices. a student guesses at each
Find the? P-value for a test to reject the claim that the proportion of all adults in the town that have been exposed to this strain of the flu is? 8%.
A regression model between sales (Y in $1,000), unit price (X 1 in dollars) and television advertisement (X 2 in dollars) resulted in the following function: = 7 - 3X1 + 5X 2 For this model SSR = 3500, SSE = 1500, and the sample size is 18...
The probability that a certain machine turns out a defective item is .05. Find the probabilities that in a run of 75 items, the following results are obtained.
If we wish to estimate the proportion of students who use library on campus , which of the following would be more biased:
What information is contained in the sample space for part (b) that is not contained in the sample space for part (c)? Do you think this information is important? Explain your answer.
find probabilty that the average of those counts is more than 83.0 mosquitoes per square meter. Assume the variable is normally distributed.
There is an upcoming concert in the local town hall. Unfortunately, we can only have 6 youths in this performance.
The state highway department is studying traffic patterns on one of the busiest highways in the state. As part of the study, the department needs to estimate the average number of vehicles that pass an intersection each day. A random sample of 64 ..
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