I think that the correct answer to this question is D .
Answer:
The t-test
Explanation:
<em>The researcher should use a t-test to compare the two means and check if they are significantly different from each other.</em>
In using the t-test, both null (H0) and alternate (H1) hypothesis are made such that:
Thereafter, the value of t is calculated and compared to its critical value on the table. The formula for calculating the t goes thus:
where, Y1 = mean of population 1, Y2 = mean of population 2, S1 = variance of population 1, S2 = variance of population 2, n1 = number of individuals in population 1 and s2 = number of individuals in population 2.
<em>At the end of the day, if the calculated t value is more than the critical value of t, the H0 is rejected and it shows that the two means are significantly different. Otherwise, the H0 is accepted and this shows that there is not significant difference between the mean of population 1 and that of 2.</em>
Answer:
50% will have long hair!
Explanation:
When you cross between Hh and hh, two out of four are Hh, which is long hair, and two are hh, which is short hair.
Two stages that occur in the carbon cycle are: Animal respiration and emissions from factories
Animal respiration is carbon dioxide and water that is released into the atmosphere .
carbon emissions can be absorbed by plants and trees during photosynthesis to produce food.
2. Solar power is a sustainable way to gather energy as it does not harm the atmosphere and carbon emissions. However,sunlight may not always be available in winter months due to shorter days and longer nights. solar panels can also be very expensive to set up, but costs can be broken even over a period of years.
Nuclear power can be a cheap way to produce electricity as deposits of uranium and plutonium will last for the next couple of thousands of years (3000-4000 years). power plants can cost colossal amounts to set up but have relatively low running costs. please like and thank me that was a lot to write