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For each of the following quantitative variables, explain whether the variable is continuous or not.
a. Body weight (in pounds).
b. Number of text messages a person sends in a day.
c. Number of coins presently in someone's pockets and/or purse.
What is the chi-square goodness-of-fit test? What are the differences/similarities between this test and an independent t-test? How do you know when to use one analysis over the other? Show an example.
describe how you will design a study that will optimize sensitivity specificity and predictive value and minimize type
a study is conducted to determine if time of day has any effect on test grades. an introductorypsychology class is
Use the "Regression" function in Excel and the data presented above to estimate the linear relation between the number of visits and the age of the patients. Examine the results of the analysis by
the weight of football players is normally distributed with a mean of 200 pounds and a standard deviation of 25
A chain sampling plan is used with a sample size of 5 and a parameter i of 3. If lots have a proportion nonconforming of 0.06, find the probability of accepting such lots.
Findout the value of X using normal distribution which gives standard deviation also mean. A math teacher gives two different tests to measure students' aptitude for math.
A manufacturer produces a batch of memory chips (RAM) and measures the mean-time-between-failures (MTBF). The manufacturer then changes a manufacturing process and produces another batch and again measures the MTBF.
The average number of television sets in the sample households turns out to be 1.86, and the SD is 0.86. Find a 95% confidence interval for the average number of television sets per household.
Use the steps of hypothesis testing. (b) Sketch the distributions involved. (c) Explain your answer to someone who has never taken a course in statistics.
The final grades for a random sample of MKT 380 students are as follows: What is the standard deviation for these data?
amy is a consultant who has provided three different training options to a client. if the client chooses option a amy
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