The z-statistic for Brett's data is found to be as given by: Option A: -5.30 (approx).
<h3>How to find the value of z-statistic for population mean?</h3>
Suppose we're specified that:
- The sample mean =
- The population mean =
- The population standard deviation =
- The sample size = n
Then the z-statistic for this data is found as:
For this case, we've got:
- The sample mean = = 295
- The population mean = = 310
- The population standard deviation = = 20
- The sample size = n = 50
Thus, we get:
Thus, the z-statistic for Brett's data is found to be as given by: Option A: -5.30 (approx).
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When calculating probability, the easiest thing to do is first count how many things there are to choose from.
5 + 3 + 1 + 2 + 3 + 1 = 15 Also, there are 3 E tiles, and 1 Y tile. 3 + 1 = 4
The probability of you drawing a E or Y tile is 4 / 15
Answer: He needs 9 hours to finish the task.
Step-by-step explanation:
Hi, first we have to subtract the gallons of water already in the tank (75) to the total capacity of the tank (300).
300-75 = 225
He needs to fill 225 gallons.
Since the pump Ross uses can fill 25 gallons of water per hour, the proportion is :
25 g / 1h
For 225 gallons:
225 g / x hours
Solving for x
25/1 = 225/x
x= 225/ (25/1)
x = 9 hours
Answer:
yes
Step-by-step explanation:
yes
Answer: 8
because its going up by 8
8+8=16
16+8=24
24+8=32
8,16,24,32
