The numbers of retail stores that opened for business and also quit business in the same year were 108, 103, 109, 107, 125, 142, 147, 122, 116, 153, 144, 162, 143, 126, 145, 129, 134, 137, 143, 150, 148, 152, 125, 106, 112, 139, 132, 122, 138, 148, 155, 146, and 158 during a period of 33 years. Test at the 0.05 level of significance whether there is a real trend.
Answer to relevant QuestionsIn some problems of occupancy theory we are concerned with the number of ways in which certain indistinguishable objects can be distributed among individuals, urns, boxes, or cells with at least one in each cell. Find an ...On August 31 there are five wild-card terms in the American League that can make it to the play-offs, and only two will win spots. Draw a tree diagram which shows the various possible play-off wild-card teams. How many distinct permutations are there of the letters in the word “statistics”? How many of these begin and end with the letter s? Use Venn diagrams to verify that (a) (A ∪ B). C is the same event as A ∪ (B ∪ C); (b) A ∩(B ∪ C) is the same event as (A ∩ B) ∪ (A ∩ C); (c) A ∪ (B ∩ C) is the same event as (A ∪ B) ∩ (A ∪ C). Show that the distribution of the random variable corresponding to W1 is symmetrical about And hence that the distribution of the random variable corresponding to U1 is symmetrical about n1n2/2.
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