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Using a 0.05 level of significance, test the hypothesis that the probability of the NCAA Division I basketball champion being from the Pac 10 is 20%. Repeat the test for the hypothesis that the probability the champion is UCLA is 20%. What do these results say about testing with group data? Include in your answer the URLs of the sites where you found the necessary data.
Find the 98% confidence interval for the mean number of peaches per tree. How many trees does she need to sample to be accurate within 10 peaches per tree?
Three automobiles are selected at random, and each is categorized as having a diesel (S) or a nondiesel (F) engine (so outcome are SSS,SSF,ect.) If X= the number of cars among the three with diesel engines, list each outcome in S and its associate..
Define validity and reliability. How can we insure our data is both reliable and valid? Which of these two do you think is the more important?
Consider a random variable Y, and a constant theta such that (1/theta)Y is distributed exponentially. Derive the lower and upper bounds for a 90% confidence interval for theta (These will be a function of y). Noe that theta=1/lambda where lambda i..
Compute the 95% confidence interval around the mean of each of the three groups and plot the confidence interval in the space provided above.
How many ounces should they advertise on the box if they want to be sure that no more than 0.5% of the boxes are filled less than that advertised amount?
In a sample of 1200 police officers, the mean annual salary was $33,000 and the standard deviation was $3200. A random sample of size 70 is drawn from this population. What is the probability that the mean annual salary is between $32,000 and $32,..
Mean of $32,000 and a standad deviation of $3000. If 100 teachers are randomly selected, find the probability that their mean salary is greater than $32,500.
Select a legitimate sampling strategy and collect at least 30 data points using your created question or topic. Discuss the sampling strategy in sufficient detail so that someone else could repeat your data collection without any difficulties or q..
A survey conducted by the American Automobile Association showed that the family of four spends an average of $215.60 per day while on vacation. Suppose a sample of 64 families of four vacationing at Niagara Falls results in a sample mean of $252...
There are 25 students in a probability class. Assume that there are 365 days in each year, and that the birthrate is constant throughout the year.
Determine sample size requirements. When the results are available you would like your margin of error to be plus or minus 5% for the satisfaction measure and plus or minus $1.50 for the spending value.
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