Question
I have the top half completed but im having trouble figuring out 8-10 Reminder: Always round final answer to two digits (i.e., hundredths). However, when
I have the top half completed but im having trouble figuring out 8-10
Reminder: Always round final answer to two digits (i.e., hundredths). However, when interpreting p values, do not round.
A random sample of 100 cable TV movies contained an average of 3.38 acts of physical violence per program. The sample standard deviation is s=0.30.
Then go to:
https://www.socscistatistics.com
Using the Single Sample Confidence Interval Calculator Using (t Statistic), answer the following questions:
- At the 90% confidence level, what is your estimate of the population value? u = ___+-___.
- We can be 90% confident that the population mean (u) falls between ____ and ____.
- At the 95% confidence level, what is your estimate of the population value? u = ___+-___
- We can be 95% confident that the population mean (u) falls between ____ and ____.
- At the 99% confidence level, what is your estimate of the population value? u = ___+-___
- We can be 99% confident that the population mean (u) falls between ____ and ____
- What happened to the interval as the confidence level increased?
Next, go to:
http://kentuckystatepolice.org/crime-traffic-data/
Click on Crime in KY 2020
Scroll to page 3
Collect (type in a wordprocessor) Offenses Reported data for 2020. We will assume these data are a sample from a normal population. Given the data are from a small sample and the population standard deviation is not known, we will be using the t-test rather than the Z test.
Then go to:
https://www.socscistatistics.com
Using the T-test Calculator for a Single Sample, enter (paste) the data into the box "Sample X". Enter 2899 as the population mean. Then, assuming a two-tailed test, answer the following questions:
(Note: In order for a statistically significant difference to exist, the value of p must be equal to or less than the significance level).
- At the assuming .01 significance level, is there a statistically significant difference between a population mean of 2899 and the sample mean? ___, t=___, p=___
- At the assuming .05 significance level, is there a statistically significant difference between the population mean of 2899 and the sample mean? ___, t=___, p=___
- At the assuming .10 significance level, is there a statistically significant difference between the population mean of 2899 and the sample mean? ___, t=___, p=___
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