Answer:
The correct option is (C) (2.769, 3.231).
Step-by-step explanation:
The confidence interval for mean when the standard deviation is not known is:
Given:
Compute the critical value as follows:
**Use a <em>t</em>-table.
The 95% confidence interval for true mean length of the bolt is:
Thus, the 95% confidence interval for true mean length of the bolt is (2.769, 3.231).
The correct option is (C).
Answer:
56 + 8x
Step-by-step explanation:
8(7) + 8(x)
= 56 + 8x
<span>peter will need 60 packages of biscuits and pamphlets.</span>
The answer is A 3 1/4 hope that helped