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The heights of 10 sixth graders are listed in inches: {54, 62, 54, 51, 60, 61, 55, 63, 59, 56}.
(a) Find the mean, median, mode, sample variance, and range.
(b) Do you think that this sample might have come from a normal population? Why or why not?
Regarding four scales referring to levels of measurement: Nominal, Ordinal, Interval and Ratio. Please pick one and discuss one level of measurement, and briefly describe how you would use that type of measurement in a study.
What does r 2 of .73 tell us? Is this a strong or weak correlation? How can you tell?
Test out an suitable hypothesis also state your conclusion. Make sure the suitable assumption as well as conditions are satisfied before you proceed.
Shown below are rental and leasing revenue ?gures for of?ce machinery and equipment in the United States over a seven-year period according to the U.S. Census Bureau. Use these data to run a linear regression and then forecast the rental and leasi..
Do the data indicate that the lengths of one supplier's 2x4's are subject to more variability than those of the other supplier? Assume α = 0.05. (HINT: F Test for Differences in Two Variances)
For each question, state whether the data collected are categorical or quantitative and indicate the measurement scale being used. What is the current Mileage?
Consider you have completed a survey of employees working in a call center doing customer service for a major manufacturing company.
An automobile manufacturer would like to know what proportion of its customers are not satisfied with the service provided by the local dealer. The customer relations department will survey a random sample of customers and compute a 99% confidence..
Monthly sales figures for store are as follows. Determine the:Mid-rangeStandard Variance.
The probability I'll jog today is 0.90 and the probability you'll jog tonight is 0.30. Find the probability:
Each,day Monday through Saturday, a baker bakes three large chocolate cakes and those not sold on the same day are given away to a food bank.
How would you choose an appropriate level of significance for your statistical test? What are the possible outcomes and limitations of your statistical test?
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