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A researcher tests how well participants know their spouse while under hypnosis, and again without hypnosis. The mean difference score between correct responses under hypnosis and without hypnosis was MD = 3.80 in a sample of 24 participants. If the estimated standard error for difference scores was 2.94, then what is the decision at a .05 level of significance (two-tailed test)?
the next 2 questions refer to the following scenario. consider an experiment of flipping a fair coin 50 times. assign a
For an n-component series system in which the component lifetimes are independent exponential random variables with respective parameters
The following data were collected as part of a study of coffee consumption among male and female undergraduate students. The following reflect cups per day consumed: Generate a 95% confidence interval for the difference in mean numbers of cups of ..
What is the probability that an arriving customer will be served immediately and what is the long run expected number of cars in the system?
Find a 95% confidence interval for the mean of all drinks dispensed by this machine if a random sample of 36 drinks has an average content of 2.25 deciliters.
MAT 540 Statistical Concept for Research. Actuaries work with statistics and probabilities each day. What do actuaries do and what tests do they take
Describe a study based on a sample of students that does not allow fundraisers to conclude that attending receptions causes future donations.
a survey of 100 recent fatal traffic accidents showed that 60 were alcohol-related. find the 95 confidence interval of
Probability based on a random experiment - What is the probability, without looking in the drawer
In a large section of statistics class, the points for the final exams are normally distributed with a mean of 72 and a standard deviation of 9. Find the lowest score on the final exam that would qualify a student for an (A, B, C, D)
Exercise 1 In a survey to estimate the abundance of a rare animal species in a study region divided into N = 1000 units, an initial simple random sample of n = 100 units is selected.
We are interested in determining if there is any significant difference between the average expenditures of those who visited the two cities?
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