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For each of the following, identify the scale of measurement (NOIR) and the best measure of central tendency for the data.
A survey reports that chocolate is the most popular ice cream flavor, followed by vanilla, strawberry, and chocolate chip. What scale of measurement is being used? Should the researcher report this information as the mode, median, or mean?
A researcher notes that the average amount spent on groceries for a family of four in a week is $138.46. What scale of measurement is being used? Should the researcher report this information as the mode, median, or mean?
Students ranked 15 favorite television shows in terms of humor. Half of the television shows surveyed were funnier than Sponge Bob. What scale of measurement is being used? Should the researcher report this information as the mode, median, or mean?
At the .01 significance level, is there a relationship between job pressure and age?
A permutation resample for a two-sample test
At 5% level of significance, does this sample prove violation of guideline that average patient must pay no more than $250 out of pocket?
1. What do discrete random variables describe? 2. Explain joint probability. 3. Explain conditional probability.
Analyst computes production cost per unit in each order and averages these to get $50.
What is our decision regarding differences between observed and expected frequencies if critical value of chi-square is 9.488 and computed value is 6.079.
Computing the mean and standard deviation for the given data - Find the value for the new standard deviation
Given that standard deviation process=4.7 and standard deviation gage=3.4, what is the total standard deviation in data from this process?
Distinguish the various observational study designs and the randomized controlled trial with regard to validity and feasibility.
Find a 95% confidence interval for the mean daily caloric intake. Interpret this interval.
Find the value of Z-score- standard normal distribution.Find out a value of the standard normal random variable z, call it z0.
What is the probability that a random person has an IQ between 85 and 115? Find the 90th percentile of the IQ distribution.
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