Answer:
Mean: 8.25
Step-by-step explanation:
*I used a calculator*
Since Katie entered the number 15 and it displayed 9 the machine in this case is doing whatever number you put in -6 so it displayed 9 again when 23 is entered 23-6 = 17 and that is what displayed and again for 100 and 94 so the machine is taking 6 off each time.
A, The machine is taking 6 off each time.
if you enter 77 and 6 was taken off it would be 71 so 71
B, 71
28 times 1/7 would give you 4
Answer:
90 grams
Step-by-step explanation:
53g+22g+15g=90grams
Answer: 
Step-by-step explanation:
Given : sample size : n= 51
sample standard deviation : s= 0.46
Significance level : 
Using chi-square distribution, the critical values will be :
Confidence interval for population standard deviation (
) :
Substitute all the values , we get
Hence, the 95% two-sided confidence interval for σ :
