6 pack for $3.79
- Divide 6 by 3.79
- 6/3.79 = 1.58
- This pack is $1.58 per bottle
9 pack for $4.50
- Divide 9 by 4.50
- 9/4.50 = 2
- This pack is $2.00 per bottle
12 pack for $6.89
- Divide 12 by 6.89
- 12/6.89 = 1.74
- This pack is $1.74 per bottle
The pack of 6-pack of bottled water for $3.79 costs the least per bottle ($1.58).
A) An inequality to represent the temperatures the pilot can take off and land in is .
B) The graph is shown below, it shows the temperature range in which the aircraft can takeoff or land.
C) The pilot could not have taken off on June 1990, the temperature in Phoenix, Arizona as the temperature is above the operating limitations.
Let the operating temperature be .
The aircraft cannot operate if the temperature is at or below ° F, or at or above ° F.
So, the inequality will be .
In the graph, the shaded region represents the temperature in which the temperatures the pilot can take off and land in. Here, we can see open circles at the end points as they are not included in the interval.
The temperature cannot be at or above 118° F. So, the pilot could not have taken off on June 1990, the temperature in Phoenix, Arizona as the temperature is above the operating limitations.
Answer:
a. x = 40 wpm
b. MOE = 4.4 wpm.
c. If you were to create many more confidence intervals from many different random samples, you would expect 95% all of the confidence intervals to have centers and widths that include the true mean.
d. About 5% of the confidence intervals would not capture the parameter (true mean) you are trying to estimate.
Step-by-step explanation:
We have a 95% confidence interval for the mean with bounds 35.6 and 44.4.
This is estimated from a sample that, in this case, has a sample size of n=54.
The value of x, used to construct the interval, will be at the center of the interval. Then we can calculate the value of x as the average between the two bounds:
The margin of error is equal to the difference between x and any of the bounds:
c. If you were to create many more confidence intervals from many different random samples, you would expect 95% all of the confidence intervals to have centers and widths that include the true mean.
d. About 5% of the confidence intervals would not capture the parameter (true mean) you are trying to estimate.
First, write it as an equation
2.50+3x=5.05
Next, subtract 2.50 from both sides
2.50-2.50+3x=5.05-2.50
3x=2.55
Divide 3 on both sides
3x/3=2.55/3
x=0.85
The cost of a bag of chips is 0.85
hope i helped :D