Answer:
-1+p<15
=-1+1+p<15+1
=p<16
the distribution of prices for a certain car model is approximately normal with mean $21,800 and standard deviation $400. a random sample of 4 cars of the model will be selected. what is the correct unit of measure for the mean of the sampling distribution of x¯ ?
The required unit of the measure of the mean is given in Dollars. Option A is correct.
Given that:
The distribution of prices for a certain car model is approximately normal with a mean of $21,800 and a standard deviation of $400. A random sample of 4 cars of the model will be selected.
The correct unit of measure for the mean of the sampling distribution of the price of the car is to be determined,
The mean of the values is the ratio of the total sum of values to the number of values.
Since the given data is of price in dollars so the measure of the mean will also be taken in Dollars because the mean is defined as the sum of all the values in a particular unit divided by the total number of different quantities.
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A restaurant has 50 tables. 40% of the tables have 2 chairs at each table. The remaining 60% of the tables have 4 chairs at each table. How many tables have 2 chairs?
Answer:
There are 20 tables with 2 chairs and 30 tables with 4 chairs in the restaurant. To calculate this, you can use the following formula: 40% of 50 tables = 50 x 0.4 = 20 tables with 2 chairs. The remaining 60% of 50 tables = 30 tables with 4 chairs.
estimate the air pressure inside a category 5 hurricane, where the wind speed is 300 km/h. 5, where the wind speed is 300 km/h
The air pressure inside a category five hurricane with a wind speed of 300 km/h can be estimated using Bernoulli's equation.the atmospheric pressure is 20.96 atmospheres,
Bernoulli's equation states that the pressure inside the hurricane is equal to the density of the air multiplied by the wind speed squared, divided by two.
In this case, the air pressure can be calculated to be 20.96 atmospheres. density of the air can be taken to be 1.29 kg/m³ . This demonstrates that the air pressure inside a category 5 hurricane with a wind speed of 300 km/h is very high, which is why these storms are so destructive.
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112 is what percent of 320?
Answer:
Step-by-step explanation:
It is 35%
First turn the question into a fraction which is 112/320, and now since it is asking for percentage we multiply the whole fraction by 100 which will look like this:
112/320 X 100.
If you put that into the calculator you will get 35. But you can also do it mentally.
If you choose to do it mentally, we go left to right so 112 X 100 = 11200 and then divide 11200 by 320 and you get 35.
Christopher plans to repaint some classroom bookcases. He has 8 gallons of paint. All of the bookcases are the same size and and each book requires 2/5 gallons of paint. How many bookcases will he be able to paint?
The number of bookcases that Christopher will be able to paint. given the amount of paint he has, is
How to find the number of bookcases ?Each bookcase would require 2 / 5 gallons of paint and Christopher has 8 gallons of paint to spare.
This means that the number of bookcases that can be painted would be :
= Gallons of paint available / Requirement for each book
Gallons of paint available = 8 gallons
Requirement for each book = 2 / 5 gallons
The number of bookcases is:
= 8 ÷ 2 / 5
= 8 x 5 / 2
= 20 bookcases
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