1) In a zoo it is appropriate to give each lion 25.6 kg of meat and each crocodile 20.2 kg. If there are 4 lions and 6 crocodiles, how many kilograms of meat does each of the 3 tigers have if the administration has 280 kg of meat?

2) 16 people agreed to pay a debt in equal parts; But it turns out that 6 of them can only pay half of what corresponds to them, thus forcing each of the others to pay an additional 9.60 dollars. What was the total debt to pay?

Two workers work in the same work. The first earns 0.8 dollars more than the second per day of work, and receives for 35 days 48.8 dollars less than what the second receives for 37. Calculate the sum of the wages of both.

Acell phone company offers two plans to its subscribers. at the time new subscribers sign up, they are asked to provide some demographic information. the mean yearly income for a sample of 40 subscribers to plan a is $45,000 with a standard deviation of $9,200. for a sample of 25 subscribers to plan b, the mean income is $64,300 with a standard deviation of $7,100. at the 0.025 significance level, is it reasonable to conclude the mean income of those selecting plan b is larger? assume unequal population standard deviations. hint: for the calculations, assume the plan a as the first sample. what is the decision rule? (negative amount should be indicated by a minus sign. round your answer to 3 decimal places.) compute the value of the test statistic. (negative amount should be indicated by a minus sign. round your answer to 2 decimal places.) what is your decision regarding h0 ? reject h0 fail to reject h0 compute the p-value. less than 0.01 between 0.01 and 0.025 between 0.025 and 0.05 between 0.05 and 0.10 greater than 0.10