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1. A clinical trial is conducted comparing a new pain medication for arthritis. Participants are randomly assigned to receive the new medication or a placebo. The outcome is pain relief within 30 minutes. The data are shown below. Pain Relief No Pain Relief New Medication 44 76 Placebo 21 99 Estimate the risk difference in pain relief between treatments=Estimate the relative risk in pain relief between treatments=Estimate the odds ratio in pain relief between treatments
In a sample of 1,000 representing a survey from the entire population, 650 people were from Laketown, and the rest of the people were from River City.
If the standard deviation is $10,000, can the cable manager conclude that there is a difference? Test at alpha = 0.10.
If the average tax payer who makes $140,000 per year owes the government $18,200 with a standard deviation of $1500, and the IRS receives a 1040 tax documents from a customer who earned $140,000 that claims he only owes $12,000, should the IRS sus..
The probability that at least 5 children out of 10 in a sample taken from a school may have a blood level that may impair development is?
A consumer electronics firm has developed a new type of remote control button that is designed to operate before becoming intermittent.
Conduct the test at the 0.05 level of significance whether the modification actually increased the life of the AAA battery. What was their decision rule?
Suppose a candidate running for sheriff claims that she will reduce the average speed of emergency response to less than 30 minutes.
Plant B has a standard deviation of 150 model FX32's per day. Which of the plants would you prefer to manage? Explain why you would prefer that particular plant.
Flaws in a certain type of drapery material appear on the average of one in 150 square feet. If we assume the Poisson distribution, give the probability of at most one flaw in 225 square feet.
At.01 significance level, can we conclude that 30-year mortgage rate for small banks is less than 6%? Evaluate the p-value.
A Pew research poll was conducted to investigate opinions about global warming. The respondents who answered yes when asked if there is solid evidence that the earth is getting warmer were then asked to select a cause of global warming.
By using.02 level of significance, carry out a 5-step hypothesis testing procedure to find out if new processes considerably reduced the wait time.
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