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:
a. every fifth student that enters her classroom
Step-by-step explanation:
I am not for sure, it makes the most sense though because her honors class is all 3 classes, and boys in each of her classes could be biased
Answer:
-84
Step-by-step explanation:
(2x + 3y)4
Distribute
4*2x = 8x
4*3y = 12y
8x + 12y
Answer: 8x + 12y
Answer:
2/4
Step-by-step explanation:
1/4 + 4 (1/2 - 3/4)^2
=>1/4 + 4 (2/4 - 3/4)^2
=>1/4 + 4 (-1/4)^2
=>1/4 + 4 (1/16)
=>1/4 + 1/4
=>2/4
