A population of 2 rabbits grows at the rate of 400% every two months. How many
1 answer:
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Answer:
i
Step-by-step explanation:
Now, before you think I'm just stealing points, let me explain. The square root of a number is the number that, if you multiply it by itself, it equals that number. The square root of 4 is 2, because 2 * 2 = 4.
Also, a negative number times another negative number, is a positive number. -2 * -2 = 4
With both of those true, then what number could be multiplied by itself to equal a negative number? i.
i is a weird number that I don't really know how to explain all that well. I am sorry, but that is all that I can give you. i is very complex and has various different equivalents, and different meanings, but i is equal to .
Hope that this helps!
Answer:
The test statistic for testing if the proportion of high-altitude vehicles exceeding the standard is greater than the proportion of low-altitude vehicles exceeding the standard is 3.234.
Step-by-step explanation:
We are given that in a random sample of 380 cars driven at low altitudes, 42 of them exceeded a standard of 10 grams of particulate pollution per gallon of fuel consumed.
In an independent random sample of 90 cars driven at high altitudes, 24 of them exceeded the standard.
Let = <u><em>population proportion of cars driven at high altitudes who exceeded a standard of 10 grams</em></u>.
= <u><em>population proportion of cars driven at low altitudes who exceeded a standard of 10 grams</em></u>.
So, Null Hypothesis, :
{means that the proportion of high-altitude vehicles exceeding the standard is smaller than or equal to the proportion of low-altitude vehicles exceeding the standard}
Alternate Hypothesis, :
{means that the proportion of high-altitude vehicles exceeding the standard is greater than the proportion of low-altitude vehicles exceeding the standard}
The test statistics that will be used here is <u>Two-sample z-test statistics</u> for proportions;
T.S. = ~ N(0,1)
where, = sample proportion of cars driven at high altitudes who exceeded a standard of 10 grams =
= 0.27
= sample proportion of cars driven at low altitudes who exceeded a standard of 10 grams =
= 0.11
= sample of cars driven at high altitudes = 90
= sample of cars driven at low altitudes = 380
So, the test statistics =
= 3.234
The value of z-test statistics is 3.234.