The robots are powered on coffee alone. They use 2 bags of coffee each day. How long will 1/4 of a bag of coffee last them
2 answers:
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Cancel out 2, the common factor for the numerator and denominator:
Cancel out 3, the common factor for the numerator and denominator:
Combine into single fraction:
The area of a shape is the amount of space it can occupy.
<em>The number of isosceles triangle in the grid is: </em><em />
The dimension of the grid is given as:
Calculate the area
The area of each isosceles triangle is given as:
The number (n) of the triangle in an x-by-x grid is:
So, we have:
Express as products
Hence, the number of isosceles triangle in the grid is:
Read more about areas at:
Answer:
The decision rule is
Fail to reject the null hypothesis
The conclusion is
There no sufficient evidence to show that the proportion of salmonella in the region’s water differs from the proportion of salmonella in the region’s wildlife
Step-by-step explanation:
From the question we are told that
The first sample size is
The number that tested positive is
The second sample size is
The number that tested positive is
The level of significance is
Generally the first sample proportion is mathematically represented as
=>
=>
Generally the second sample proportion is mathematically represented as
=>
=>
The null hypothesis is
The alternative hypothesis is
Generally the test statistics is mathematically represented
=>
=>
From the z table the area under the normal curve to the right corresponding to 1.56 is
Generally the p-value is mathematically represented as
=>
=>
From the value obtained we see that hence
The decision rule is
Fail to reject the null hypothesis
The conclusion is
There no sufficient evidence to show that the proportion of salmonella in the region’s water differs from the proportion of salmonella in the region’s wildlife