Answer:
66
Step-by-step explanation:
57 x 2= 114
180-114= 66
Answer:


And the 68% confidence interval is given by (91.1186, 97.2814)
Step-by-step explanation:
For this case we know that mean time that visitors stay at a museum is given by:

The standard deviation is given by:
And the standard error is given by:
And we want to interval captures 68% of the means for random samples of 25 scores and for this case the critical value can be founded like this using the normal standard distribution or excel:

We can find the interval like this:

And replacing we got:


And the 68% confidence interval is given by (91.1186, 97.2814)
Answer:
B. (4,2)
Step-by-step explanation:
Answer:
a=14
b=6
c=5
Step-by-step explanation:




14 ±6
I'm assuming she gets 2% commission on sales and that she gets paid monthly from her yearly salary.
If the above is true, her monthly pay is calculated as follows:
Commission: 48500 * 0.02 = $970
Monthly salary: 30000 ÷ 12 = $2500
So monthly pay is $2500 + $970 = $3470