Answer:
The percentage of samples of 4 fish will have sample means between 3.0 and 4.0 pounds is 66.87%
Step-by-step explanation:
For a normal random variable with mean Mu = 3.2 and standard deviation sd = 0.8 there is a distribution of the sample mean (MX) for samples of size 4, given by:
Z = (MX - Mu) / sqrt (sd ^ 2 / n) = (MX - 3.2) / sqrt (0.64 / 4) = (MX - 3.2) / 0.4
For a sample mean of 3.0, Z = (3 - 3.2) / 0.4 = -0.5
For a sample mean of 3.0, Z = (4 - 3.2) / 0.4 = 2.0
P (3.2 <MX <4) = P (-0.5 < Z <2.0) = 0.6687.
The percentage of samples of 4 fish will have sample means between 3.0 and 4.0 pounds is 66.87%
Answer:
3 1/5 minutes per meter
Step-by-step explanation:
To find the rate in minutes per meter, divide the number of minutes by the number of meters:
(2.4 min)/(0.75 m) = 3.2 min/m = 3 1/5 minutes per meter
Answer:
B
Step-by-step explanation:
Since a function would mean that a customer is able to purchase 1.1 of an item or 1.5 of an item, which is false. It also means that the customers pay the same price for a different amount of items.
For coin there are two possible outcomes: head or tail.
For 3-color spinner you have three possible outcomes: red, blue and yellow.
Tossing a coin once and then spinning a 3-color spinner once you'll have 6 posiible outcomes:
- head + red;
- head + blue;
- head + yellow;
- tail + red;
- tail + blue;
- tail + yellow.
First, find 300% of 25.
Percentages are parts of 100, so divide 300 by 100.
300 / 100 = 3.
So multiply that to 25.
3 * 25 = 75
Add it to 25:
75 + 25 = $100