ccording to a study conducted by Deloitte, people between the ages of 14-25 year
ID: 3325208 • Letter: C
Question
ccording to a study conducted by Deloitte, people between the ages of 14-25 years watch 0.5 hours of TV on average per week with a population standard deviation of 0.5 hours. ssume the population is normally distributed. A random sample of 20 individuals in this age roup showed the average time spent watching TV per week was 10.78 hours. Test using the ritical value method if the population mean time spent watching TV in the age group 14-25 ears has changed, using a 0.01 elect one: ±2.33, reject Ho. z, ±2.575, do not reject Ho.Explanation / Answer
As per the Chegg policy, we are advised to do one question at a time so i am attempting the 6th one.
6. Given confidence interval: (-2.1, 3.4)
We reject the null hypothesis only if the value which we assumed in null hypothesis doesn't fall in the given interval.
From the options, we can see that all but 3.5 doesn't fall in the interval. Hence,
Option B is correct.
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