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A publisher reports that 44% of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage. A random sample of 100 found that 40% of the readers owned a particular make of car. Is there sufficient evidence at the 0.02 level to support the executive's claim? (Yes/No)
in a two-group intervention study what is the meaning of a t-test with p value of 0.03 result?a there is a high
Can we conclude that the mean time for a game is less than 3.50 hours? Use the .05 significance level.
1 due to normality the formula for computing z is the same for a single data value as it is for an average of the data
If we select a crew member at random, what is the probability the crew member earns:
after being rejected for employment jennifer summer learns that the kingston technology corporation has hired only 3
the housing market has recovered slowly from the eonomic crisis of 2008. recently in one large community relators
Find N(A), R(A), N(A^T),R(A^T). Show that the fundamental subspace theorem holds: N(A^T)=R(A)^(upside down T), N(A)=R(A^T)^(upsidedown T). Hint: Notice that the fourth row is the sum of the first three rows.
Let X have normal density with mean 1 and variance 9. Find the inflection points of its density.
Commute times of teachers in a large urban area are normally distributed with a mean of 46 minutes and a standard deviation of 5 minutes. If a commute time is randomly selected, find the probability that the commute time will be greater than 51 mi..
researcher seth b. young measured the walking speed of travelers in san francisco international airport and cleveland
although there are many treatments for bulimia nervosa some subjects fail to benefit from treatment. in a study to
If a random sample of 50 stocks from this index reveals an average gain of 11% and standard deviation of 6%, can you reject the magazine's claim in a two-tailed test? What is your p-value?
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