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"A job in an insurance office involves telephone conversations with policyholders. The office man- ager estimates that about half of the employee's time is spent on the telephone. How many observa- tions are needed in a work sampling study to estimate that time percentage to within 6 percent and have a confidence of 98 percent?"
Draw a straight or dotted line for graphing. Most especially the below problem. Please assist. Could you also let me know what is the significance of the dotted and straight lines?
mike dreskin manages a large los angeles movie theater complex called cinema l ll lll lv. each of the four auditoriums
Stock 2 closing price over last month has the mean of 59.2 and the standard deviation of 3.3. Determine which has higher coefficient of variation?
question in a group of persons traveling in a bus 6 persons can speak tamil 15 can speak hindi and 6 can speak
Assume the least squares equation is Y' = 10 + 20X. What does the value of 10 in the equation indicate? Y intercept. For each unit increased in Y, X increases by 10.
What is the probability that the dample mean grade point average will be either less than 2.709 or more than 2.955.
the business college computing center wants to determine the proportion of business students who have laptop computers.
Suppose the probability that a federal income tax return conatins an arithemetic error is 0.2. If 10 federal income tax returns are selected at random,
A random variable Y is uniformly distributed over a range of 0 to 2*pi. Another random variable X is related to Y by X=cos(Y).
A researcher is comparing two antihypertensive drugs A and B with regards to reduction of patient's systolic blood pressure (SBP). Baseline SBP is measured for two groups of patients.
a. Define variables that would tell how many units to purchase from each source. b. Develop an objective function that would minimize the total cost.
describe a situation when you would prefer the median and the inter quartile range in describing a distribution over
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