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Suppose that we have the data {x1, x2, ..., xn} such that x1=x2=...=xn=3. What is the mean of the data? What is the standard deviation? I am a little confused here because I just started this class. So would the mean be 1.5 being that 1+2=3/2?
Hypothesis testing in areas such as medicine, courts, marketing analysis. How might hypothesis testing be used to determine where to put stop lights?
a pair of fair six-sided dice are tossed independently of each other.a list the sample space of this experiment.b
R.H. Bruskin Associates Market Research found that 30% of Americans do not think having a college education is important to succeed in the business world.
You are concerned about wait times at the cash registers in the supermarket. You collect data and have a sample size of 10, which test would you use a Z or a T test and why?
In a large western university, 15% of the students are graduate students. If a random sample of 20 students is selected, what is the probability that the sample contains:
Further suppose that the test is 98% accurate. What s the probability that a woman whose test indicates that she is pregnant actually is?
A new surgical procedure has been developed to remove cataracts; it involves a smaller incision.- State the null and alternative hypotheses in terms of σ.
Suppose a national polling agency conducted 100 polls in a year, using proper random sampling, and reported a 95% confidence interval for each poll.
Find out a 95 percent confidence interval for population mean.
1 a.) Find the FV of $100 after 5 years with 10% nominal rate compounded semiannually.
What is the probability of a randomly selected student having earned an A or a B on the exam given they devoted more than 8 hours to studying for the exam?
the local newspaper was interested in the proportion of people that would vote in favor of a bond issue to add a new
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