The

confidence interval of a standard deviation is given by:

Given a sample size of 31 charge sales, the degree of freedom is 30 and for 90% confidence interval,

Therefore, the 90% confidence interval for the standard deviation is given by
Answer:
45
Step-by-step explanation:
Can u upload more of it so I can’t get ur wrong
180 = 14x + 8x + 4
180 = 22x + 4
180 - 4 = 22x + 4 - 4
176 = 22x
176/22 = 22x/22
8 = x
8x + 4
8(8) + 4
64 + 4
68.
Hope this helps!
Answer:
.25 cents, per Party hat
Step-by-step explanation: