Question
1) Suppose that, over a certain period of time, a parent monitors how many texts their 17 year old son sends each day. The average
1) Suppose that, over a certain period of time, a parent monitors how many texts their 17 year old son sends each day. The average amount of texts sent a day is 42, and the standard deviation is 12.
A)If one day from this time period is randomly selected, and the number of texts for that day is one standard deviation above the population mean, how many texts were sent that day?
B) Now, suppose random samples of 16 days are selected during this time period, and for each sample, the sample mean is calculated. (b) What is the mean of the sampling distribution of the sample mean?
C) What is the standard error of the sampling distribution of the sample mean?
D)If, for a random sample of 16 days, the sample mean ends up being exactly one standard error above the population mean, what is the sample mean for those 16 days?
E)Suppose a random sample of 16 days had a sample mean of 36 text messages a day, how many standard errors below the population mean would that be?
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started