A large jar is filled with marbles. Of these marbles, 10% are red and the rest are blue. We randomly draw 100 marbles. According to the Central Limit theorem, the percentages of red marbles in such samples are approximately normally distributed. Find the mean and standard deviation of this normal distribution. Round the standard deviation to one decimal place. Mean:
Standard deviation:

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step-by-step explanation:

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )