The heights of a population of students have a mean of 5’8” and
a standard deviation of 3 inches. For each of the following sample
sizes, find ??̅ and ??̅
a) Sample size n = 10 students
b) Sample size n = 100 students
c) Sample size n = 1000 students
The heights of a population of students have a mean of 5’8” and a standard deviation...
Consider the approximately normal population of heights male
college students with mean = 74 invhes and standard deviation = 6.2
inches. A random sample of 10 heights is obtained.
(b) Find the proportion of male college students whose height is greater than 74 inches (Give your answer correct to four decimal places.) X (c) Describe the distribution of x, the mean of samples of size 10. skewed right approximately normal skewed left chi-square (d) Find the mean of the x...
Women’s Heights Assume that Women’s heights are normally distributed with mean μ=63.6 in. and standard deviation σ=2.5 in. Use StatKey to answer the following questions. Include a screenshot from StatKey for each question. Find the percent of women with heights between 58.6 and 68.6 inches. Find the percent of women with heights between 60 inches and 65 inches. Find the height of a woman in the 95th percentile, (taller than 95% of other women.) Life Expectancy Part 4 From the...
The heights, in inches, of male orangutans have an unknown distribution with mean 51 and standard deviation 4 inches. A sample, with size n=65, is randomly drawn from the population and the values are added together. Using the Central Limit Theorem for Sums, what is the mean for the sample sum distribution?
35. Assume that women’s heights are normally distributed with mean 63.6 inches and standard deviation 2.5 inches. Find the value for the 3rd quartile Q3. A 65.3 in B 66.1 in C 65.2 in D 64.3 in E None of the above 36. Assume a Normal Distribution with mean µ = 98.7 and IQR = 0.50. Find the standard deviation. A. 0.37 B. 0.25 C. 0.50 D. 1.50 E. none of the above 37. If a population is normally distributed,...
Consider the approximately normal population of heights of male college students with mean μ = 65 inches and standard deviation of σ = 3.9 inches. A random sample of 12 heights is obtained. (a) Describe the distribution of x, height of male college students. 1) skewed right 2) approximately normal 3) skewed left 4) chi-square (b) Find the proportion of male college students whose height is greater than 70 inches. (Give your answer correct to four decimal places.) (c) Describe...
Consider the approximately normal population of heights of male college students with mean μ = 66 inches and standard deviation of σ = 4 inches. A random sample of 25 heights is obtained. (a) Describe the distribution of x, height of male college students. -skewed right -approximately normal -skewed left -chi-square (b) Find the proportion of male college students whose height is greater than 74 inches. (Give your answer correct to four decimal places.) (c) Describe the distribution of x,...
The population standard deviation for the heights of dogs, in inches, in a city is 7.8 inches. If we want to be 95% confident that the sample mean is within 2 inches of the true population mean, what is the minimum sample size that can be taken? z0.10 z0.05 z0.04 z0.025 z0.01 z0.005 1.282 1.645 1.751 1.960 2.326 2.576 Use the table above for the z-score, and be sure to round up to the nearest integer.
Consider the approximately normal population of heights of male college students with mean μ = 71 inches and standard deviation of σ = 3.5 inches. A random sample of 13 heights is obtained. (e) Find P(x > 67). (Give your answer correct to four decimal places.) (f) Find P(x < 66). (Give your answer correct to four decimal places.)
Consider the approximately normal population of heights of male college students with mean μ = 67 inches and standard deviation of σ = 3.1 inches. A random sample of 16 heights is obtained. (a) Describe the distribution of x, height of male college students. skewed right approximately normal skewed left chi-square (b) Find the proportion of male college students whose height is greater than 67 inches. (Give your answer correct to four decimal places.) (c) Describe the distribution of x,...
Consider the approximately normal population of heights of male college students with mean μ = 72 inches and standard deviation of σ = 5 inches. A random sample of 22 heights is obtained. (a) Describe the distribution of x, height of male college students. skewed right approximately normal skewed left chi-square (b) Find the proportion of male college students whose height is greater than 73 inches. (Give your answer correct to four decimal places.) (c) Describe the distribution of x,...