Question
Scores on a dental anxiety scale range from 0 to 20 the scores are normally distributed with a mean of 11 and a standard deviation of 4. What percentage of the population would have a dental anxiety score greater than 3.
50
likes252 views
Answer to a math question Scores on a dental anxiety scale range from 0 to 20 the scores are normally distributed with a mean of 11 and a standard deviation of 4. What percentage of the population would have a dental anxiety score greater than 3.
Clarabelle
4.794 Answers
1. Calculate the z-score for x = 3
z = \frac{3 - 11}{4} = -2
2. Look up the cumulative probability for z = -2
3. Calculate the probability of a score being greater than 3:
P(X > 3) = 1 - 0.0228 = 0.9772
4. Convert the probability to a percentage:
0.9772 \times 100\% = 97.72\%
Answer: 97.72%
2. Look up the cumulative probability for
3. Calculate the probability of a score being greater than 3:
4. Convert the probability to a percentage:
Answer: 97.72%
Frequently asked questions (FAQs)
What is the vertex form of the parabola function y = ax^2 if the vertex is at (h, k)?
+
Question: Determine the x-intercept of the logarithmic function f(x) = log(base 2)(3x) - 4.5.
+
Math question: Compare the growth rates of the exponential functions f(x) = 10^x and f(x) = e^x. Determine which function grows faster and by how much, capping at x = 5.
+
New questions in Mathematics