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Suppose that observations X1, X2,..., Xn are made on a process at times 1, 2,..., n. On the basis of this data, we wish to test H0: the Xi 's constitute an independent and identically distributed sequence
Ha: Xi11 tends to be larger than Xi for =1,..., n (an increasing trend) Suppose the Xi 's are ranked from 1 to n. Then when Ha is true, larger ranks tend to occur later in the sequence, whereas if H0 is true, large and small ranks tend to be mixed together. Let Ri be the rank of Xi and consider the test statistic Then small values of D give support to Ha (e.g., the smallest value is 0 for When H0 is true, any sequence of ranks has probability 1yn!. Use this to determine the P-value in the case n = 4, d = 2
a recent national study about the effectiveness of echinacea in cold treatments was performed by a medical school in
What is the probability that a U.S. user who downloads music, selected at random, obtained it from either the United States or Canada.
If the speed of lights is 3.00x 10 to the power of 8 m/sec, how long does it take light to travel 2.29x 10 to the power of 11 m, the distance from the sun to Mars? Round to one decimal place.
Here is a scenario, which uses graphical displays, and your job is to assess accuracy of the result.
A university club consists of 4 men and 6 women. Two members are chosen at random without replacement. Let X = 0 if first person chosen is male, 1 if first person chosen is female. Y = 0 if second person chosen is male, 1 if second person chosen i..
1. a government watchdog association claims that 70 of people in the u.s. agree that the government is inefficient and
The machine will stop working if more than three components fail. Find the probability that the machine will be working.
Adult women in Japan have heights which are normally distributed with mean 158 centimeters and standard deviation 6 centimeters. Which country has the higher percentage of women taller than 167 centimeters?
question the expense of moving the storage yard for the consolidated package delivery service cpds is justified only
Median $2.4 million, modal sales $2.6 million and standard deviation of distribution is $500,000. Determine the Pearson's coefficient of skewness?
1. State the direction of the alternative hypothesis used to test the state office's belief. Type gt (greater than), ge (greater than or equal to), lt (less than), le (less than or equal to) or ne (not equal to) as appropriate in the box. 2. Use t..
we choose one of the words in the following sentence uniormly in random and then choose of the letters of that word.a.
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