Answer:
475.
Step-by-step explanation:
We have been given that for a normal distribution with μ=500 and σ=100. We are asked to find the minimum score that is necessary to be in the top 60% of the distribution.
We will use z-score formula and normal distribution table to solve our given problem.

Top 60% means greater than 40%.
Let us find z-score corresponding to normal score to 40% or 0.40.
Using normal distribution table, we got a z-score of
.
Upon substituting our given values in z-score formula, we will get:





Therefore, the minimum score necessary to be in the top 60% of the distribution is 475.
Answer:
The Moon is an average of 238,855 miles (384,400 km) away
B is one of them, i'm not sure how any of the other answers are equivalent to 20% of 45 which is 8.
Answer:
About 53% percent of the students went to the cafeteria.
Step-by-step explanation:
there are 26 students and 14 left that can be put into the fraction 14/26.
To find the percentage you then divide 14 by 26 and turn it into a percent and you get something like 53.846... but you can simplify it to 53%
5 Steps to Solving the Problems With Your Problem Solving
Step 1: Pin the Problem. Clearly define the issue at hand. ...
Step 2: Identify the Issues. Start breaking down the problem into subcomponents. ...
Step 3: Generate Hypotheses and Prioritize Proving Them. ...
Step 4: Conduct Your Analysis. ...
Step 5: Advance Your Answer.