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By contacting social workers registered through a provincial association, a researcher wants to know if the social workers who have worked longer in one position (measured by placing the workers into three groups - new (less than 5 years employed), middle (6-10 years), and long (over 10 years) are more satisfied (measured as not satisfied, satisfied, and very satisfied) with their employment.
a) Would the researcher be able to obtain a sampling frame?
b) What procedures would the researcher have to follow to obtain a probability sample?
c) Name the two main variables that would be tested in this study and the level of measurement of these variables.
d) Name the statistical tests that would be used to test this relationship.
1a. the mean weight of 120 7th graders is 75 lbs with a standard deviation of 6 lbs. calculate the standard error of
Expected value, variance and standard deviation.A volunteer ambulance service handles 0 to 5 service calls on any given day. The probability distribution for the number of service calls is as follows.
Critically discuss the Central Limit Theorem? How large should the sample size be if the underlying distribution of the population values are:
Determine and plot the probability mass function and probability distribution function of the contract award amount (in millions of dollars).
What is the t-test statistic? Top Shelf Sales Volume 23 35 50 68 32 Bottom Shelf Sales Volume 55 70 72 51 63
Medium-sized college town were surveyed, and it was found that 110 were regular voters. Estimate the true proportion of regular voters with 90% confidence and comment on your results.
Using the raw measurement data presented below, calculate the t value for independent groups to determine whether or not there exists a statistically significant difference between the salaries of female and male human resource managers.
why do we have two versions of the addition rule we use for calculating outcomes? hint what are the two types of
question do students at your school study more less or about the same as at other business schools? business
Construct a scatter plot and calculate the slope and intercept in this problem
To compare the effectiveness of two treatments 1 and 2 for a particular disease. Patients were separated in 2 treatment groups. A patient in group 1 received treatment 1 and patients in group 2 received treatment 2.
Mention the critical value of test statistic (Or give the p-value of the test.)
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