The stimulant ritalin has been shown to increase attention span and improve academic performance in children with adhd (evans et al., 2001). to demonstrate the effectiveness of the drug, a researcher selects a sample of n = 20 children diagnosed with the disorder and measures each child's attention span before and after taking the drug. the data show an average increase of attention span of mr = 4.8 minutes with a variance of52 125 for the sample of difference scores. a. is this result sufficient to conclude that ritalin significantly improves attention span? use a one- tailed test with α .05. compute the 80% confidence interval for the mean change in attention span for the population.

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step-by-step explanation:

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the most boring thing ever written

step-by-step explanation:

i am writing something. yes, i plan to make it the most boring thing ever written. i go to the store. a car is parked. many cars are parked or moving. some are blue. some are tan. they have windows. in the store, there are items for sale. these include such things as soap, detergent, magazines, and lettuce. you can enhance your life with these products. soap can be used for bathing, be it in a bathtub or in a shower. apply the soap to your body and rinse. detergent is used to wash clothes. place your dirty clothes into a washing machine and add some detergent as directed on the box. select the appropriate settings on your washing machine and you should be ready to begin. magazines are stapled reading material made with glossy paper, and they cover a wide variety of topics, ranging from news and politics to business and stock market information. some magazines are concerned with more recreational topics, like sports card collecting or different kinds of hairstyles. lettuce is a vegetable.