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The mean amount of time it takes a kidney stone to pass is 13 days and the standard deviation is 5 days. Suppose that one individual is randomly chosen. Let X = time to pass the kidney stone. Round all answers to 4 decimal places where possible.
a. What is the distribution of X? X ~ N(______________,___________)
b. Find the probability that a randomly selected person with a kidney stone will take longer than 10 days to pass it. _______________
c. Find the minimum number for the upper quarter of the time to pass a kidney stone. ________________ days.
an accounting firm is planning for the next tax preparation season. from last years returns the firm collects a
BUS708 Statistics and Data Analysis - Explain how you collect the data and discuss whether or not your sample is biased. Is this primary or secondary data?
If we randomly select 27 persons who have died in an accident, what is the probability that 12 persons are pedestrians?
An investment counselor would like to meet with 14 of his clients on Wednesday, but he only has time for 10 appointments. How many different combinations of the clients could be considered for inclusion into his limited schedule for that day?
a parcel service randomly selected 48 packages it received. the sample has a mean weight of 18.6 pounds. assume that
Look at both control charts and determine if any of the control chart signals are present to indicate that the process is not in control.
in a sample of 1000 voters 520 plan to vote for candidate a. find the 95 confidence interval for the percent in favor
In hypothesis testing, the level of significance is? When would you use a t test and when would you use an f test ? You are interested in the assumption that adult students earn better grades than traditional students.
What types of graphical presentation (histogram, dot plot, stem-and-leaf, bar chart, etc.) would you include? Explain your reasoning.
1) 5 fair coins are tossed in the air at once. What is the probability of obtaining 3 heads and 2 tails?
Samples of four rainbow trout and four largescale suckers taken from the Spokane River were tested for lead and zinc content in milligrams per kilogram.
In the state of the world you specified above, does Tybalt know that Romeo knows that Juliet has read the letter? Justify your answer.
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