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The total blood cholesterol concentrations, in mg/dL, are shown below for a random sample of six people. In the table below, x is the age of the subject and y is the subject's total cholesterol concentration. Find the 95% prediction interval when x = 53 years.
x (age) 36 43 53 67 66 78
y (mg/dL) 208 224 238 238 277 263
A machine cuts circular filters from large rolls of material. If 7.3% of the filters fail to meet specifications, use the normal approximation to the binomial to compute the probability
Descriptive statistic results from quarterly sales figures over a 18 year period (73 qtr) are below. Please interpret the standard Deviation and Median in terms of sales results,
A recent study at a local college claimed that the proportion of students who commute more than fifteen miles to school is no more than 25%.
whereas Zoe's class has an average of 83% with a standard deviation of 12%. Assume that scores in both classes follow a normal distribution. Convert Maria's midterm score of 84 to a standard z score.
Explain the decisions you made in the third cycle of the simulation. State the reasons for your decision and include an explanation of why you did not follow the recommendations of the stakeholders.
State the main points of the Central Limit Theorem for a mean. Why is population shape of concern when estimating a mean? What does sample size have to do with all?
Suppose Z has a standard normal distribution with a mean of 0 and a standard deviation of 1.0. One-half (50%) of the possible Z values are between ________ and ___________ symmetrically distributed about the mean.
A compute manufacturer is about to unveil a new,faster PC.The new PC is faster but intial tests incidcate there is more variation in the processing time.
A sample of 9 production managers with over 15 years of experience has an average salary of $71,000 and a sample standard deviation of $18,000.
Under what situations must the nonparametric test be used? Describe in detail. Write down the strengths and weaknesses of nonparametric tests?
The amount of corn chips dispensed into a 10 ounce bag by the dispensing machine has been identified at possessing a normal distribution with a mean of 10.5 ounces and a standard deviation of .2 ounces.
1. classify the following variable as nominal ordinal discrete or continuous and state why it is such a variable
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