In 2012, the general social survey asked a sample of 1324 people how much time they spent watching tv each day. the mean number of hours was with a standard deviation of . a sociologist claims that people watch a mean of hours of tv per day. do the data provide sufficient evidence to conclude that the mean hours of tv watched per day differs from the claim?

If we compare the p value and the significance level we see that so then we FAIL to reject the null hypothesis at the significance level provided. So there is not enough evidence to conclude that the mean is significantly different from 3.

Step-by-step explanation:

Data given and notation  

represent the sample mean  (assumed)

represent the standard deviation for the sample (assumed)  

sample size  

represent the value that we want to test  (assumed)

represent the significance level for the hypothesis test (assumed).  

z would represent the statistic (variable of interest)  

represent the p value for the test (variable of interest)  

State the null and alternative hypotheses to be tested  

We need to conduct a hypothesis in order to determine if the true mean is different from 3, the system of hypothesis would be:  

Null hypothesis:  

Alternative hypothesis:  

Compute the test statistic  

We don't know the population deviation, but the sample size is large, so for this case is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

(1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

We can replace in formula (1) the info given like this:  

What do you conclude? Use the p-value approach  

Since is a two tailed test the p value would be:  

If we compare the p value and the significance level we see that so then we FAIL to reject the null hypothesis at the significance level provided. So there is not enough evidence to conclude that the mean is significantly different from 3.

how do heroes resolve conflicts in beowulf?

question 15 options:

they sue each other in court

they get a mediator

the seek counseling

they get even or take revenge

step-by-step explanation:

i think the length is 12 and the width is 17