Mathematics, 09.06.2021 01:00 liana8
1. Two groups, A and B, consists of 100 subjects each, each with a disease. A serum is given to group A but not to group B (the control); otherwise the two groups are treated identically. It is found that in groups A and B, 75 and 65 persons, respectively, recover from the disease. Test the hypothesis that the serum helps to cure the disease, using a level of significance of 5% (0.05).
Answers: 2
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Enter the missing numbers in the boxes to complete the table of equivalent ratios.time (min) distance (km)? 36 9? 1512 ?
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The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?
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If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.
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1. Two groups, A and B, consists of 100 subjects each, each with a disease. A serum is given to grou...
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