Answer: a. N(0.92, 0.0215)
Step-by-step explanation:
For population proportion (p) and sample size n, the mean and standard deviation is given by :-
The sampling distribution model for p is given by :_

, where

We assume that the seeds are randomly selected.
Given : Information on a packet of seeds claims that the germination rate is 92%.
i.e. p= 0.92
The packet contains 160 seeds.
i.e. n= 160
Then , 
Hence, the sampling distribution model for p is:

To find the average speed in miles per hour, you would divide the distance, 380 miles, by the time, 8 hours, in order to find the answer. Therefore the average speed should be 47.5 mph.
ANSWER: 44
EXPLANATION:
1/2 (12+9) 8
=1/2 x 11 x 8
=44
Hope it helps!
Answer:
56.4°
Step-by-step explanation:
sin(5/6)
= 0.98511 rad = 56.443°