The pvalue will change if you get a new data set Question 7

The p-value will change if you get a new data set. Question 7 options: True False

If your 95% confidence interval for the average gas price in Columbus Ohio turned out to be ($2.25, $2.75), do you know what the sample mean was?

Question 4 options:

Yes

No

Suppose you found a 95% confidence interval for the mean using a random sample of size n, and you found it was too wide; that is, the margin of error was too large. If you wanted the margin of error to be ¼ of what it was before, what do you have to do to the sample size?

Question 5 options:

Increase it by 4 times what it was before

Decrease it by 1/4 of what it was before

Increase it by 16 times what it was before

None of the above

Your friend claims the average price of a burger in the Columbus Gateway Area is $10.00. You believe it’s lower than that. What symbol represents the $10 in this scenario?

Question 6 options:

X

0

x

Solution

The p-value will change if you get a new data set. Question 7 options: True False

If your 95% confidence interval for the average gas price in Columbus Ohio turned out to be ($2.25, $2.75), do you know what the sample mean was?

Yes

x - e = 2.25 ---------> x=2.25+e

x + e = 2.75

2.25+e + e = 2.75 ---------->0.25

x = 2.25+0.25 = 2.50

mean = 2.50

Increase it by 4 times what it was before

What symbol represents the $10 in this scenario?

0