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The mileages recorded for a sample of company vehicles during a given week gave the following data:
(Data set CSE8.xlsx can be found on the book's online platform.) Determine the mean, mode and a five figure summary of the data. What do these descriptive statistics tell you about the distribution of the data?
Data now becomes available on the remaining ten cars owned by the company and is shown below. How does this new data change the measures of location which you have calculated?
204 267 198 179 210 260 290 198 199
Salary data for a sample of 50 universities were obtained. We are curious about the relationship between mean salaries for assistant professors.
Suppose you are an event coordinator for a large performance theater. One of the hottest new Broadway musicals has started to tour, and your city is the first stop on the tour.
Were there significant differences between the groups. Give the relevant stastical data to support your answer and what is the confidence interval associated with your answer to item # 1?
A standard deviation of 1 month will have a total lifetime of at least 45 months if all of the bulbs are used non stop.
A researcher wished to estimate the number of households with two cars. How large a sample is needed in order to be 95% confident that the sample proportion will not differ from the true proportion by more than 4%.
the cost of a college education has increased at a much faster rate than costs in general over the past twenty years.
With a mean of 33 oz. and a standard deviation of 0.7 oz. 95% of packets actually contain more than x oz. of soap powder. What is x?
to find the sample size needed for a hypothesis test if ho mu10 ha mult10 sigma is unknown alpha 0.01 beta 0.05 and e
Compare the mean and standard deviation of the actual distribution of your 50 sample proportions for 20 tosses to what the theoretical sampling distribution model says the mean and standard deviation should be.
We found that average performance ratings do not differ between males and females in the population. Now we need to see if they differ among the grades. Is the average performace rating the same for all grades?
a sample of 4 telephones is selected from a shipment of 20 phones. there are 5 defective telephones in the shipment.
you will submit one word document for this assignment. you will create this word document by cutting and pasting spss
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