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Give an example of a survey that is poorly designed because it contains one or more of the following kinds of bias. And then, indicate how the survey could be corrected:
In a two-tailed hypothesis test, the test statistic is determined to be z = -2.5. The p-value for this test: Why?
The manager of Sandy Corporation wants to determine whether or not the type of work schedule for her employees has any effect on their productivity. She has selected 15 production employees at rando
A certain species of fish has a weight which is normally distributed, with mean u = 2kg and standard deviation 0.3 kg. The boat can hold a maximum weight of 500 kg of fish, what is the maximum numbe
A major brokerage company has an office in Miami, Florida. The manager of the office is evaluated based on the number of new clients generated each quarter. The following data reflect the number of
Bara Research Group conducted a survey about church attendance. The survey respondents were asked about their church attendance and asked to indicate their age. Use the sample data to determine whet
As a responsible statician (someone who practices statistics) you feel a need to tell him what he is doing wrong. Explain three things that he is doing wrong ( or that break some statistcal requirem
A clinic employs nine physicians. Five of the physicians are female. Four patients arrive at once. Assuming the doctors are assigned randomly to patients, what is the probability that all of the ass
If the probability that Event A occurs is 0.4, that Event B occurs is 0.6, that Event C occurs is 0.5, that both Event A and Event B occurs is 0.3, that both Event B and Event C occurs is 0.2, and E
Next year the chain will complete the process of opening western stat franchises. In how many ways can it designate the 16 western states in which to hold off openins until next year
You are dealt a hand of three cards, one at a time. Find the probability your cards are all red (all diamonds or hearts).
A certain company believes 95% of job applicants are trustworthy. The company gives everyone a polygraph test asking, "Have you ever stolen anything from your work place?" Naturally, all applicants
A corporation has 11 manufacturing plants. Of these, 7 are domestic and 4 are located outside the United States. Each year a performance evaluation is conducted for 4 randomly selected plants. What
A researcher wishes to compare how students at two different schools perform on a math test. He randomly selects 40 students form each of the schools and obtains their test scores. He pairs the firs
Helene claimed that the expected value when rolling a fair die was 3.5. Steve said that wasn't possible. He said that the expected value was the most likely value in a single roll of the die, and si
Compute the variance and standard deviation of the number of people in families per household. Calculate the expected number of people in families per household in the United States.
He is using a two sample z-test to try to prove his theories. (using scores form an intelligence test). As a responsible statician (someone who practices statistics) you feel a need to tell him what
Provide an appropriate response. Describe a run chart and give an example. Refer to the values on each of the axes as you describe the run chart.
Provide an appropriate response. Define independent and dependent samples and give an example of each.
An article recommended the following estimated regression equation for relating y = VO2max (L/min, a measure of cardiorespiratory fitness) to the predictors x1 = gender (female = 0, male = 1), x2
An article reported the following data on oxygen consumption (mL/kg/min) for a sample of ten firefighters performing a fire-suppression simulation:
State the null and alternative versions of the research hypothesis that the variance in annual repair costs is larger for the older automobiles.
Of the three levels of strategy that are part of an organizations decision-making hierarchy, which level develops annual objectives and short-term strategies in such areas as production, operations,
You conducted a Chi-Square Goodness of Fit Test in your ASCI 691 capstone project. Unfortunately, you did not get the sample size you had hoped for during your research. You were able to get 55 in t