Susan wants to conduct a survey to find how much time the students of her school spent eating in a local cafeteria. Which of the
1 answer:
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Answer:
The answer is
Step-by-step explanation:
We ll have to find more information first to solve this question.
1. One mole = 6.022 x 10^23
Assuming one gallon of paint covers the 400 sq ft of area.
Thus total area which can be covered by 1 mole of gallon is
2. Now we will find the surface area of earth
The radius of earth is 2.1 x 10^7 Feet
substituting values
3. Now we will find out the number of planets of earth size which can be covered by mole of gallon of paint
= Total area one mole of gallon can cover / area of earth
Answer:
The significance level is and since we are conducting a right tailed test we need to find a critical value who accumulate 0.01 of the area in the right of the normal standard distribution and we got:
So we reject the null hypothesis is
Step-by-step explanation:
For this case we define the random variable X as the number of entry-level swimmers and we are interested about the true population mean for this variable . On specific we want to test this:
Null hypothesis:
Alternative hypothesis:
And the statistic is given by:
The significance level is and since we are conducting a right tailed test we need to find a critical value who accumulate 0.01 of the area in the right of the normal standard distribution and we got:
So we reject the null hypothesis is