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IQ as measured by an Intelligence Test is scaled so that the mean in the population is 100 with a standard deviation of 15. What is the probability of randomly sampling a set of 5 people out of this population who have a man IQ of 120 or greater?
A ball is drawn, and then it and another ball of the same color are placed back in the urn. Finally, a second ball is drawn. What is the probability that the second ball drawn is white?
At one excavation site 8641 pot shards have been found that not yet been cleaned and identified. What is the probability that:
Compute the following .r = correlation between x and y = - 0.7 = mean of the values of x = 50.25 = mean of the values of y = 31.77 = standard deviation of the values of x = 15.85 = standard deviation of the values of y = 1.76 The slope of the leas..
Calculate the t-test statistic by hand. I don't understand steps to solve this problem. If you could provide me with a step by step narrative it would be appreciated.
What I need are relevant questions for a survey questionnaire that will be valid for testing each of 3 hypotheses. Include the variables tested.
Suppose a fair coin is tossed n times. The probability of obtaining head and tail are the same because this is a fair coin. The proportion of heads is defined as the number of heads appeared divided by n.
State the null and alternate hypotheses, the decision rule, find the test statistic, state your decision, and estimate the P value for the following:
Assume the variable is normally distributed. If an individual is selected, find the probability that the individual's pressure will be between 120 and 121.8 mmHg.
Restaurateur Danny Valentine is evaluating two, sites, Raymondville and Rosenber, for his next restaurant. Denny suspects that Raymondville residents (population 1) dine out more often (number of times per month) than Rosenberg residents (populati..
Define research question and response Take a sample of adolescents without acne Double-blind randomized controlled trial.
Choice of exponential smoothing constant w has little or no effect on forecast values using exponential smoothing.
Ten students were sampled at random from a student population. Each was asked how many courses he or she was planning on studying in the upcoming year. The following is a list of the reported data values: 1, 2, 2, 3, 4, 5, 5, 5, 5, 6 What is the vari..
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