Answer:
d. The population standard deviation is known.
Step-by-step explanation:
T-distribution or Z-distribution, which to use?
If we have the population standard deviation is known, we use the z-distribution.
Otherwise, if we only have the standard deviation for the sample, we use the t-distribution.
Which of the following is not appropriate to use the t-confidence interval for
When the population standard deviation is known, so letter d.
there are 60 minutes per hour
99/60 = 1.65 km per minute
1.65 x 2 = 3.3 km in 2 minutes
Answer:
Step-by-step explanation:
The zeros are the values of x for which y=0.
The zero of this graph is x=1.
Answer:
$0.35 per cup
Step-by-step explanation:
<u>Step 1: Find the unit price per quart</u>
5.60 / 4
<em>$1.40 per quart</em>
<em />
Step 2: Find the unit price per cup
1 quart = 4 cups
1.40 quarts / 4 cups
<em>$0.35 per cup</em>
<em />
Answer: $0.35 per cup
