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Extract from published statistics, indices showing monthly changes in prices and average earnings since January 2005.
a. Rebase these indices so that the current year becomes the base year, stating any assumptions made.
b. Compare the indices produced (Part a).
c. Construct an index for the value of ‘real' earnings.
Apply either the chi-square or the Kolmogorov- Smirnov test for normality to the data described in Exercise 14.85. At the 0.05 level of significance, could the data have come from a normal population?
A social psychologist reports that "in our sample, ethnocentrism was significantly higher (P
If the null hypothesis is true, state the statistical distribution of the test statistic. Use α=0.05 and perform all 5 steps of hypotheses testing for complete credit.
A recent national survey found that high school students watched an average (mean) of 7.5 DVDs per month with a population standard deviation of .60.
What figures do you need to calculate for this test? How many degrees of freedom are there? What is the value of the chi-square statistic for this table? What is the p-value of this statistic
Identify the sample and population. Also, determine whether the sample is likely to be representative of the population.
Find the marginal distribution of vehicle type in New York and find the conditional distribution of vehicle type given that the transmission is automatic.
a sample survey interviews an srs of 267 college women. suppose that 70 of all college women have been on a diet within
What conclusion is appropriate when He cannot be rejected and what conclusion is appropriate when He can be rejected - What is the p-value for the hypothesis test?
a major issue facing many states is whether to legalize casino gambling. suppose the governor of one state believes
the current necessary to produce a certain level of brightness of a television tube was measured for two different
the monthly incomes from a random sample of workers in a factory are shown below.monthly incomein
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