This is a ratio problem. If dry ing : water = 5 : 2, what is water when dry ing = 15?
The new ratio is 15 : water. How do we get from the first ratio to the new one? We multiply by 5. Meaning, we also need to multiply the 2 quarts of water by 5, giving us 10 quarts of water.
Answer:
a)
b)
c) We are 99% confident that the true mean for the costs of an order for the local pizzeria is between 20.766 and 25.234
d) For this case if we decrease the confidence then the margin of error would be lower and that implies a narrower interval. Becuase the critical value is lower if the decrease the confidence level
Step-by-step explanation:
Data provided
represent the sample mean for the cost of orders
represent the sample population deviation
n=300 represent the sample size
Part a
The confidence interval for a true mean is given by:
(1)
And the margin of error is given by:
The Confidence is 0.99 or 99%, the significance is and , and the critical value would be
Part b
The confidence interval would be:
Part c
We are 99% confident that the true mean for the costs of an order for the local pizzeria is between 20.766 and 25.234
Part d
For this case if we decrease the confidence then the margin of error would be lower and that implies a narrower interval. Becuase the critical value is lower if the decrease the confidence level
Answer:77
Step-by-step explanation:
Answer:
Step-by-step explanation:
This is an incomplete question
Answer:
more than 168 tickets
Step-by-step explanation:
4 weeks = 28 days
5 x 28 = 140
1 week = 7 days
4 x 7 = 28
140 + 28 = 168
In order for hector to sell more than Danielle he has to sell a # of tickets that is greater then 168.