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Calcium levels in people are normally distributed with a mean of mg/dL and a standard deviation of mg/dL. Individuals with calcium levels in the bottom of the population are considered to have low calcium levels. Find the calcium level that is the borderline between low calcium levels and those not considered low. Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.
What kinds of plots are useful in data screening? What can you do if your data do not meet the assumptions of your statistic?
Let m denote a natural number. Use any properties of the natural numbers to argue that m x m is not equal to m + m.
A sample of n = 9 individuals was selected from a normally distributed population with a mean of µ = 25 and a standard deviation σ = 6. A treatment was administered to the sample and, after treatment, the nine individuals produced the following sc..
Within each of your current careers/ jobs, there are sets of data that can be analyzed. For example, a teacher can use a set of test scores, a dietician can analyze a set of patient weights and correlate them to incidences of diabetes, and a sales..
Found mean number of sticks of gum chewed per day was 9. Standard deviation of population is 1. At α = 0.05, is number of sticks of gum person chews per day actually greater than 8?
Using a simulation of 25 random numbers. Find average profits for order quantities of interest. Investigate in intervals of 500.
Doctors nationally believe that 68% of a certain type of operation are successful. In a particular hospital 47 of these operations were observed and 37 of them were successful. At a = 0.05 is this hospital's success rate different from the nationa..
Make a decision regarding the null hypothesis based on the sample information. Interpret the results of the test and state your conclusion.
A sample size n=100 is taken from a population that has a proportion p= 1/5. If, in the sample, ^p=0.25, will the 95% confidence interval for p contain the true value of p^is at top p at bottom ^p
Four different types of fertilizers are used on raspberry plants. The number of raspberries on each randomly selected plaint is given below.
If we select a crew member at random, what is the probability the crew member earns:
Then explain your answer to someone who has never had course in statistics (but who is familiar with mean, standard deviation, and Z scores.)
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