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For a random sample of drivers using an automated toll booth that requires exact change, the following data show the elapsed time (in seconds) from the moment the vehicle stopped to the moment it began to move away following payment of the toll: 6, 5, 7, 4, and 17.
Using the 0.10 level of significance, apply the Kolmogorov-Smirnov test for normality in examining whether the times could have come from a normally distributed population.
In a recent study of incomes in Allegheny county in Pennsylvania it was found that distribution of family incomes is skew to the right. what can we say about the relationship between mean and median?
The file MobileLoyaltycontains spending on products ($) during a three-month period by a sample of 15 customers receiving incentives through a mobile loyalty program. Compute the mean and median. Compute the variance, standard deviation, range, and..
Select 3 differently shaped flowers from a florist or grocery store - (Walmart even has a decent selection - a lily, a carnation, and a snapdragon are all nice and very different from one another).
Other questions we might want to ask about pooling similar populations: Do all the subpopulations have the same ratio of yellow to green seeds? Does the average ratio deviate from our hypothesized ratio?
two cards are drawn at random from an ordinary deck of 52 cards. determine the probability that both cards are hearts
Before making an unsecured loan to an individual a bank orders a report on the applicants credit history. To justify making the loan, the bank must find the applicant's credit record to be satisfactory.
What is the value of the population mean? What is the best estimate of this value?
Find the 90% confidence interval for the standard deviaiton of the ages of seniors at Oak Park College if a sample of 24 students has a standard deviation of 2.3 years. Assume the variable is normally distributed.
What is the median number of CDs owned? What is the 40th percentile? What is the range of the number of CDs owned? What is the standard deviation of the number of CDs owned?
what is an interaction? describe an example and identify the variables within your population work social academic etc.
Families USA, a monthly magazine that discusses issues related to health and health costs, surveyed 20 of its subscribers. It found that the annual health insurance premiums for a family with coverage through an employer averaged $10,979.
A chocolate bar is considered underweight if it weighs less than 8.0 oz. What proportion of chocolate bars weighs less than 8.0 oz?
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