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The actual percentages of the people in the sample who have heart attacks. The use of statistical methods to make the prediction that US men aged 40 or older who take aspirin every other day have a l
A medical inspector wants to estimate the overall average monthly occupancy rates of the cancer wards in 80 different hospitals that are evenly located in the northwestern, southeastern, central, an
After you create the graph, fit a linear trend line, displaying the formula and the r-squared. Explain to the executives if you can use this time series data to forecast the ratings of upcoming mont
Assume that the client will allocate $10,000 to the eight recommended stocks in increments of $1,000, with all allocations being equally likely. Determine the probability that the client will only p
A five number summary for hours studied in a week were 5, 12, 14, 18, and 20. What was the shortest number of hours studied by anyone?
Let the interval [-r,r] be the base of a semicircle. If a point is selected at random from this interval, assign a probability to the event that the length of the perpendicular segment from the poin
A fair coin is tossed independently five times (i.e., P(heads) = P(tails) = 0.5)
Suppose that the diameters of bearings are independently normally distributed random variables with mean=1.005 and variance=(.003)^2.
The Adams Corporation stores spare parts at two warehouses, one in Baltimore and one in Plattsburgh. The number of defective and acceptable spare parts at each warehouse is given below:
Steel rods are manufactored with a mean length of 26 centimeter(cm). Because of variability in the manufactoring process, the lengths of the rods are approximately normally distributed with a stand
A certain drug causes kidney damage in 1% of the patients. Suppose that the drug is to be tested on "n" patients, and let "E" represent the event that kidney damage occurs in one or more of the pat
The capacity (bits) of the largest DRAM (dynamic random access memory) chips commonly available at retail has increased as follows: Make a scatterplot of the data. Growth is much faster than linear.
A town has a population of exactly 10,000 people. What is the MEAN and STANDARD deviation of the number of people celebrating their birthday on any given day?
A 10 minute radiation count gives a statistical uncertainty of 2.8% (relative uncertainty). How much additional time must be allocated to reduce the statistical uncertainty to only 1.0%?
Construct your own empirical probability situation. that is, determine a probability value in relation to your expected degree program (education, leadership, nursing, business, etc.)
Several statistical tests have a way to measure effect size. What is this, and when might you want to use it in looking at results from these tests on job related data?
How do I determine the total number of possible outcomes in of the NBA finals best of seven series (need to win 4 games to win series)?
At a Phonesmart store, each phone sold is twice as likely to be an Apricot as a Banana. Also each phone sale is independent of any other phone sale. If you monitor the sale of two phones, what is th
The number of traffic accidents on successive days are independent Poisson random variable with mean 2.
How would you characterize the smallest 25% (At what level of concentation Cl would expect 75% of the concentration to fall below)
Suppose Babsie generated the following probability distribution: p(x) 5 .25 7 .30 10 .25 12 .05 15.Is this probability distribution discrete or continuous? Explain your reasoning. Calculate the expe
Robert stands three times on a pair of scales in a period of 5 minutes. The first time he weighs 92kg, the second time he weighs 102kg and the thrd time he weighs 95 kg. What conclusion can we draw
AJ DAVIS is a department store chain, which has many credit customers and wants to find out more information about these customers. A sample of 50 credit customers is selected with data collected on
Search the data and provide a hypothesis for which you would use a z test to determine whether the research results are significant. Explain why the z test would be most appropriate for this study.
If a single deposit of $25000 is invested at 1.75% yearly interest, what equal year-end withdrawals can be made each year for 10 years, leaving nothing in the fund after the 10th withdrawal? How muc