Answer:
2.897
Step-by-step explanation:
Let us find the mean and variance for the sample first.
105 104 110 112
114 106 108 109
Mean = sum/8 = 108.5
Variance = 12
Std dev = sq rt of variance = 3.464
Std error = std dev/ sq rt n
since n =8, we get std error = 1.225
Since sample size is small, df =8-1 =7
For 95% confidence intervals, t critical value for two tailed=2.365
Margin of error = std error x t critical = 1.225(2.365)
=2.897
Answer:
The first blank is 20 and the second one is 1.25
Step-by-step explanation:
i just took the quiz
Answer:
0
Step-by-step explanation:
The slope is the difference in y values / difference in x values of the points.
For (-9, 5), and (-17, 5) slope is zero because the y-coordinates are the same.
m= (5-5)/ (-17- -9) = 0/ 8 = 0
The line has the slope 0 so is a horizontal line
The answer is 25. 20-30= -10+15=5x5=25
Answer: (6,12)
Steps: The midpoint of (7, 15) and (5,9) is (6,12)
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