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1. Compute the percentage of the normal curve located at or above each of the following z values.
a. 1.50
b. -1.50
c. -0.86
d. 0.00
e. 1.46
f. -0.50
For each of the value ( a thru f) in the above problem to calculate the percentage of the normal curve located at or below each of the z values.
2. The mean cholesterol level of a large population of mena in the 50 to 60 year age group is 190 mg per 100 ml of blood. The standard deviation of the population is 25 mg per 100 ml. Assume that the measurements are distributed approximately normally.
a. What % of the population has cholesterol 250 mg or more?
b. What % of the population has cholesterol levels 190 mg or less?
c. What % of the population has cholesterol levels between 140 mg or less?
Use differential to approximate square root of 16.3
Calculate a 95% confidence interval for the difference in the proportions of birth defects when the contaminated well was in use and when the contaminated well was not in use.
Assuming 250 of each sex, can we conclude that there is a significant difference in the proportions at a 0.05 level of significance?
Make any necessary corrections to your work based on facilitator's feedback and write: A paragraph describing the dependent variables of interest and children's anxiety as measured by the RCMAS.
The condition for the question is that the deck of cards has 52 cards and among them are 12 face cards. What is the probability of choosing 6 face cards out of 8 chosen. Thru Binomial distribution holds( meaning with replacement)
Suppose that a survey is being planned for purposes of estimating the average number of hours spent exercising daily by adults (18 years of age or older) living in a certain community.
I'm trying to determine what happens to the sample size if the level of confidence is reduced from 95% to 90% but the allowable error and the standard deviation remain
Find a 99% confidence interval for the true mean heart rate of all people with this untreated condition. Show your calculations.
Consider the linear system x' = Ax, where A is a n x n real matrix. If x = x(t) is a solution of the linear system, we define:
What is your decision about H0 and H1 at = 0:05? Give the orderings of the population means according to the tukey procedure. Is H0 : 2 = 4 a contrast?
1.in many sports there is a debate over the use of high-tech equipment to improve performance. a recent study in golf
A random sample of 160 car purchases are selected and categorized by age.
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