Answer:
[143.61, 156.39]
Step-by-step explanation:
Because the population standard deviation is not available AND the sample size is less than 31, we can use a t procedure here.
Plug these values into your calculator:
Sample mean = 150
Sample size = 16
Standard deviation = 12
Confidence level = 95% = 0.95
and get [143.61, 156.39] as your confidence interval
Answer:
-2
Step-by-step explanation:
Answer:
C. $22
Step-by-step explanation:
We are given a graph showing the relation between the distance travelled in miles by taxi and the taxi fare.
To find an estimate of how much her taxi fare would be if she travelled 8.5 miles by taxi, simply look 8.5 on the x-axis, then trace it upwards till it meets the line. The point where it meets the line would be the corresponding y-value of x = 8.5.
The point would be (8.5, 22). This means, if the woman travels 8.5 miles, her taxi charges would be approximately $22.
