A normal distribution has a mean of 64 and a standard deviation of 16. What is the median? (Enter an exact number as an integer, fraction, or decimal.)
For normal distribution ,
Mean = Median = mode .
Given, Mean = 64
So,
Median = 64
A normal distribution has a mean of 64 and a standard deviation of 16. What is...
A normal distribution has a mean of 52 and a standard deviation of 11. What is the median? (Enter an exact number as an integer, fraction, or decimal.)
1.Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) μ = 101; σ = 16 P(x ≥ 120) = 2.Suppose X ~ N(5, 9). What is the z-score of x = 5? (Enter an exact number as an integer, fraction, or decimal.) z =
24. About what percent of the x values from a normal distribution lie within two standard deviations (left and right) of the mean of that distribution? (Enter an exact number as an integer, fraction, or decimal.) _______ % 25. About what percent of x values lie between the mean and one standard deviation (one sided)? (Enter an exact number as an integer, fraction, or decimal.) _______ % 26. About what percent of x values lie between the first and third standard deviations (both sides)?...
A normal distribution has a mean of 64 and a standard deviation of 12. Refer to the table in Appendix B.1. Determine the value above which 80 percent of the values will occur. (Round z-score computation to 2 decimal places and the final answer to 2 decimal places.) X
Suppose x has a distribution with a mean of 70 and a standard deviation of 20. Random samples of size n = 64 are drawn. (a) Describe the distribution. x has a geometric distribution. has a normal distribution. x has an unknown distribution. x has a Poisson distribution. X has an approximately normal distribution. x has a binomial distribution. Compute the mean and standard deviation of the distribution. (For each answer, enter a number.) Hy = Oz = (b) Find...
1.The distribution of results from a cholesterol test has a mean of 180 and a standard deviation of 20. A sample size of 40 is drawn randomly. Find the probability that the sum of the 40 values is greater than 7,400. (Round your answer to four decimal places.) 2.A researcher measures the amount of sugar in several cans of the same soda. The mean is 39.01 with a standard deviation of 0.5. The researcher randomly selects a sample of 100. Find the sum...
A)What is the z-score of x = 4, if it is 1.9 standard deviations to the left of the mean? (Enter an exact number as an integer, fraction, or decimal.) z = B) What is the z-score of x = 5, if it is 0.166 standard deviations to the left of the mean? (Enter an exact number as an integer, fraction, or decimal.) z = C) Suppose X ~ N(12, 1). What value of x has a z-score of −2.25?...
A distribution of values is normal with a mean of 248.5 and a standard deviation of 89. Find P28, which is the score separating the bottom 28% from the top 72%. Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
A distribution of values is normal with a mean of 232.7 and a standard deviation of 54.3. Find P1, which is the score separating the bottom 1% from the top 99%. P1 = Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
A distribution of values is normal with a mean of 238 and a standard deviation of 93.7. Find the probability that a randomly selected value is between 219.3 and 481.6. P(219.3<x< 481.6) = Enter your answer as a number accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.