Answer:
(D) If the null hypothesis is true, there is a 24% probability of getting a sample difference in means as far or farther below 0 as the difference found in the samples.Explanation:
The time it takes for 1g of strontium-90 to decay to 250 mg is; 57.6 years
<h3>What is the half life of an element?</h3>
The formula for half life is;
A(t) = A₀ * (¹/₂)^(t/t_1/2)
Where;
A(t) is amount left after t years
A₀ the initial quantity of the substance that will undergo decay;
t_1/2 is the half-life of the decaying quantity.
We are given;
t_1/2 = 28.8 years
A₀ = 1 g
A(t) = 250 mg = 0.25 g
Thus;
0.25 = 1 * (¹/₂)^(t/28.8)
log 0.25 = (t/28.8) log (1/2)
-0.60206 = (t/28.8) * -0.3010
t = 2 * 28.8
t = 57.6 years
Read more about half life at; brainly.com/question/11152793
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I believe your answer is a blind spot
Hope this helps
Answer:
For what purpose is Jules Verne's text mentioned in the article?
Answer:
A- Metacognition
Explanation:
The term <em>metacognition</em> refers to processes used to monitor and regulate one's thinking, understanding, and performance. It includes a critical awareness of one's thinking and learning and oneself as a thinker and learner. For example, you may be aware that you have trouble remembering people's names and remind yourself that you should try harder to remember the name of the person you met. Metacognitive strategies are often used to help students understand the way they learn and enhance their performance.
