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1) According to a recent census, 33.3% of adults in a certain country have a university degree. In a random sample of 336 adults in the country, only 92 of them (27.4%) said they have a university degree. The median age of the individuals in the sample was 34.7 years, while the median age of all people living in the country is known to be 34.8 years.
Determine whether each of the following values in bold is a statistic or a parameter.
A randomized controlled trial was designed to compare the effectiveness of splinting against surgery in the treatment of carpal tunnel syndrome.
Thirty-two samples of 8 items each were collected from a process. The average sample mean is 12 and the average range is 0.10.
the thickness of eight pads designed for use in aircraft engine mounts are measured.the measurements are 41.83 42.68
Choose an article that explains research using one or more statistical tests (z, t, ANOVA, chi square, regression) as part of data analysis. Explain the study using the following information:
A random sample of stipends of teaching assistants in economics is listed below. Is there sufficient evidence at the alpha=.05 level to conclude that the average stipend different from $15,000? The data is listed below:
Construct frequency distribution and calculate mean, range and standard deviation - Construct control charts for variables, rejects per unit and percentage defectives per batch
a company that manufacturers coffee for use in commercial machines monitors the caffeine content in its coffee. the
Lemon Corporation, an automobile manufacturer, is trying to determine the source of defects in some of its autos.
Find that 116 plan to renew their subscriptions. Use (a=0.01). p = the population of subscribers to Golf Illustrated who renew. Calculate the p-value.
you hypothesize that when both a man and a woman are in the front seat of a car the man is more likely to be driving
If X and Y are two independent Poisson random variables, then show that the conditional distribution of X given X+Y is binomial.
cupid is doing research about relationships between heterosexual humans heights and whether they couple up and get
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