Answer:
23 chalkboards
Step-by-step explanation:
Given:
Mean length = 5 m
Standard deviation = 0.01
Number of units ordered = 1000
Now,
The z factor =
or
The z factor =
or
Z = - 2
Now, the Probability P( length < 4.98 )
Also, From z table the p-value = 0.0228
therefore,
P( length < 4.98 ) = 0.0228
Hence, out of 1000 chalkboard ordered (0.0228 × 1000) = 23 chalkboard are likely to have lengths of under 4.98 m.
(r-s)/r=d would be the rule you use to find the discount when r= regular price and s equals sale price and d= discount
Answer:

Step-by-step explanation:
There are 60 minutes in an hour, thus
56 minutes =
of an hour
To simplify divide 56 and 60 by 4
56 minutes =
← in simplest form
Answer:
25% chance, unless there is a set of numbers