Random samples of players for two types of video games were selected, and the mean number of hours per week spent playing the games was calculated for each group. The sample means were used to construct the 90 percent confidence interval (1.5,3.8) for the difference in the mean number of hours per week spent playing the games. The maker of one of the video games claims that there is a difference in the population mean number of hours per week spent playing the two games. Is the claim supported by the interval

For this case the confidence interval for the differences of the true means is given by:

With the degrees of freedom given by:

And for this case the confidence interval for the true difference of means is given by:

So then we have enough evidence to conclude that the true means are different and one of the two is significantly higher than the other one. So then the claim makes sense at 10% of significance.

Step-by-step explanation:

Assumptions

For this case we assume that we have the following info given :

the sample mean for the group 1

the sample mean for the group 2

the sample deviation for the group 1

the sample deviation for the group 2

represent the sample size for 1

represent the sample size for 2

Solution to the problem

For this case the confidence interval for the differences of the true means is given by:

With the degrees of freedom given by:

And for this case the confidence interval for the true difference of means is given by:

So then we have enough evidence to conclude that the true means are different and one of the two is significantly higher than the other one. So then the claim makes sense at 10% of significance.

step-by-step explanation:

the most boring 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.