How to find standard deviation from percentile for normal distribution?
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Your percentile is (a hundred times) the probability that another score is less than your score. We have a normal distribution, so that probability is the integral of the standard normal from negative infinity to our normalized score.
Let's call the percentile rank
We know 68% of the probability will be between -1 and +1 standard deviation. So
Similarly, 95% of the probability will be between -2 and +2 standard deviations. So
That's about the list I can do off the top of my head. I think three standard deviations is 99.7%. For the rest we just consult a z table or integrated normal table. We find p in the body of the table (maybe |.5-p| depending on the table) and then the column headings tell us our z score.
In this modern age, your computer can do this for you quickly
Related Questions
Pls help ASAP! Consider this linear function:Y= 1/2x + 1Plot all ordered pairs for the values in the domain.D: { -8,-4,0,2,6}
The city park in which Allen plays is a square and measures exactly one million square feet. Which side dimensions produce the most accurate measurement of the park? A) 998.8 x 997.7 B) 998.84 x 997.73 C) 998.843 x 997.731 D) 999 x 998
Find n. 30/38= 15/n n=______
If prizes for a carnival are priced at 5 for 80 cents. how much would 250 prices cost?
Answers
Answer:
$1,200
Step-by-step explanation:
Let x be the amount of money deposited in the mutual fund. The interest earned by that investment can be determined as the amount deposited times the interest rate:
The value the second deposited can be determined as x+$2,400 and its interest earned is defined in the same manner as the first deposit's:
The total interest on both investment equals the sum of both interests:
$1,200 were invested in the mutual fund.
Answers
The value of the variable x at y = 15 will be 200.
What is the solution to the equation?
The distribution of weights to the variables involved that establishes the equilibrium in the calculation is referred to as a result.
The equation is given below.
(1/5)x - (2/3)y = 30
Solve the equation for x, then we have
(1/5)x = 30 + (2/3)y
x = 150 + (10/3) y
The value of the variable x at y = 15 will be
x = 150 + (10/3) × 15
x = 150 + 50
x = 200
The value of the variable x at y = 15 will be 200.
More about the solution of the equation link is given below.
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Plug in 15 for y.
2/3 of 15 is 10.
Add 10 to each side.
Divide each side by 1/5.
(dividing by a fraction is the same as multiplying by its reciprocal...flip 1/5...×5)
Answers
Total meals: 23.50 + 40.65 + 30.50 + 15.68 = $110.42
Percentage =
Final answer:
James received an average tip of 16% for the meals he served, calculated by dividing his total tips by his total bill amount and multiplying by 100.
Explanation:
To solve this problem, we first need to find the total amount of bills that James served, which is $23.59 + $40.65 + $30.50 + $15.68 = $110.42. James received a total of $17.67 in tips. The percentage of tips James received can be calculated by dividing the total amount of tips by the total amount of bills he served and then multiplying that result by 100 to get the percentage. So, the calculation would look like this:
($17.67 / $110.42) × 100 = 16.01%
Rounding to the nearest percent, James received an average of 16% tip for serving these meals.
Learn more about Percentage Calculation here:
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b = 16 units and h = 9.6 units
B.
b = 20 units and h = 16 units
C.
b = 20 units and h = 9.6 units
D.
b = 20 units and h = 12 units
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Answers
15 units
17 units
18 units
20 units
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AB = √ 16 + 9
AB = √ 25
AB = 5
AD = 4 ; DC = 4 ; BC = 7
Perimeter = 5 + 4 + 4 + 7 = 20 units
Answer: 20 units
Step-by-step explanation: