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A survey investigating whether the proportion of today's high school seniors who own their own cars is higher than it was a decade ago finds a P-value of 0.017. Is it reasonable to conclude that more high-schoolers have cars? Explain.
If the population proportion is believed to be no more than 0.15, how many owners must be included in a simple random sample if the dealers want to be 90% confident that the maximum likely error will be no more than 0.02?
Criticize the following definitions in light of the eight rules for lexical definitions:- Animal: a living creature corporeal, distinct, on the one side, from pure spirit, on the other, from pure matter. (Johnson's Dictionary)
let the number of phone calls received by a switchboard during a 5-minute interval be a random variable x with
Find a 95% confidence interval for the population mean selling price of all homes in this neighborhood.
a bridge culvert is designed to pass a stream discharge with an annual exceedance probability of 0.02 without
Find a 95% confidence interval on the difference in mean active concentrations for the two catalysts. Is there any evidence to indicate that the mean active concentrations depend on the choice of the catalyst? Base your answer on the results of par..
What is the probability that between 5 and 10 firms, inclusively, purchase a Unix machine from Sun Microsystems?
Write the equation of the multiple regression linear model for the case of 2 and k independent or explanatory variables.
Based on your results in part (a), is it sensible to examine and interpret the main effects of drug and of dose?
Run an ANOVA using only groups 1 to 6 (You can hide group 7 from the analysis by data followed by select cases and then you filter out group 7 by if GROUP~= ). Also run the posthoc tests LSD and Bonferroni.
1. create a report contains total values of the ordered items by country in each year. note use the following tables
suppose you are using a completely randomized design to study some phenomenon. there are three treatment levels and a
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