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Question: The price of a first-class stamp in 1970 was 8 cents, whereas in 2002 it was 37 cents. The Consumer Price Index for 1970 was 38.8, whereas for 2002 it was 172.2. If the true cost of a first-class stamp did not increase between 1970 and 2002, what should it have cost in 2002? In other words, what would an 8-cent stamp in 1970 cost in 2002, when adjusted for inflation?
What is the probability of obtaining a sample mean greater than M=105, for a random sample of n=9 people? For a random sample of n=36 people?
If the airline sells 160 tickets for a flight that has only 155 seats, what is probability that a seat will be available for every person holding a reservation and planning to fly?
customers at a gas station pay with a credit card a debit card b or cash c. assume that successive customers make
a long time ago in a galaxy far far away the average density of stars is 17 stars per cubic parsec a cubic parsec is a
Livelong, Inc.'s computer monitors have a failure rate of 0.000035 units per hour. Assuming an exponential distribution:
compute the correlation coefficient for the data belowx values -5 -1 1 2y values 3 -1 -3 3a 0.641b 0.453c - 0.411d -
Would it be appropriate to say the coefficient of determination (R-squared) is the proportion of variation in Y due to the variation within each of the categories of X?
He surveys a sample of 40 students and finds that for the most recent semester their average cost was $430 with a standard deviation of $80. What is the test value for this hypothesis test?
The Safety Council estimates that off-the-job accidents cost businesses almost $500 billion annually in lost productivity. Based on their estimates, companies with hundred employees are expected to have six off-the-job accidents per year. a) What ..
The policy of searching for a ?xed time is a static policy. Would a dynamic policy, which allows the decision as to whether to stop at each time t, depend on the number already found by t be bene?cial?
Conduct an analysis of variance test to determine whether there is any evidence that the population mean times through some pair of traffic bottlenecks.
the weights of cats at a shelter are normally distributed with a mean of 11 lbs. and a standard deviation of 12. if 16
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