Hi can someone me ! question 1: mahra bought a t-shirt, at $50 each, then she bought a hat for $ 70 and a pair of shoes for $180. she also bought a skirt, but she does not remember the price. if the average price per item was $ 120, find the price of the skirt.? the price of the skirt was $ question 2: james was attending an it course. he had two tests, each worth 10% of the final mark; a project, worth 15% of the final mark; and the practical exam, worth 65% of the final mark. if he has scored: 88% in test 1, 68% in test 2; 99% in project and 70% in the exam, what was his final mark (weighted mean) as a you

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