Answer:
<u>The cost to rent a rug cleaner for 6 days is $ 58</u>
Step-by-step explanation:
1. Let's review the information given to us to answer the question correctly:
Cost to rent a rug cleaner for d days = 5.50d + 25
2. Find the cost to rent the cleaner for 6 days.
Cost to rent a rug cleaner for 6 days = 5.50 * 6 + 25
Cost to rent a rug cleaner for 6 days = 33 + 25
Cost to rent a rug cleaner for 6 days = $ 58
<u>The cost to rent a rug cleaner for 6 days is $ 58</u>
Answer:
As 
, it is possible to reject null hypotesis. It means that the local mean height is less tha 0.7 m with a 5% level of significance.
Step-by-step explanation:
1. Relevant data:
2. Hypotesis testing
3. Find the rejection area
From the one tail standard normal chart, whe have Z-value for 
is 1.56
Then rejection area is left 1.56 in normal curve.
4. Find the test statistic:
5. Hypotesis Testing
As , it is possible to reject null hypotesis. It means that the local mean height is less tha 0.7 m with a 5% level of significance.
Answer:
3
Step-by-step explanation:
