Q5: A group of poker players are profile in this month's magazine. The table below lists their name and average winnings per tournament. Consider this to be a population.
Player Average Winnings
Seattle Slim $27000
KC Kate $33000
Minnesota Mel $45000
Gotham City Graced $35000
The Player $60000
a) find the mean and standard deviation of this population.
b) List all possible samples of size 2.
c) Find the sample average for each sample.
d) Find x-bar
e) What is the arithmetic difference between µ and µ-x-bar?
f) Will this always be true?
g) Should the small population/large sample adjustment factor be used in this case? Show why or why not.
h) Find ơ x-bar.
... to compare the means of 3 or more populations? Why can't we just use a series of z-tests or t-tests to compare all of the possible pairs of population means to ...
... x. b) Find the probability that ¯x exceeds 110 c) Find the probability that the sample mean deviates from the population mean μ = 106 by no more than 4. ...
... 4, use the given confidence level and sample data to find (a) the margin of error E and (b) a confidence interval for estimating the population mean μ ...
... 2- The length of human pregnancies is approximately normally distributed with a population mean of 266 days and a population standard deviation of 16 days. ...
... a. Make a point estimate of the population mean difference in fine motor skills. ... Estimate of population mean difference = X 2 − X 1 =40.6-35.4= 5.2. ...
... The following example will illustrate a confidence interval for a population mean when the population... Finite Populations Population Size 150 ...
... involve comparisons of two different population means. ... We should think of independence as meaning that there is ... between specific values of the two populations. ...
