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According to the U.S. National Center for Education Statistics, 80% of college and university teachers use computers on the job, compared to 60% of teachers below the college level.
Using a one-tail test at the 0.01 level, and assuming that each of these independent samples consisted of 100 teachers, is the percentage of college and university teachers using computers on the job significantly greater than the percentage for teachers below the college level? Determine and interpret the p-value for the test.
Hamburger Joe's sells the best burgers in town. The variable unit cost for making one burger is $.97. The fixed cost of making burgers for 12 months will be a total of: $140,000.
in estimating the mean monthly fuel expenditure miu per household vehicle the u.s. energy information administration
What is a discrete and continuous random variable? What is an example of each variable? What are the similarities and differences between each variable?
if a researcher is using a paired-sample sign test and has 4 positive signs 8 negative signs and 3 zeros what is the
Suppose the counselor found the sum of squared deviations from the mean of the sample to be 135. Given that he tested 10 people, what would be the estimated population variance?
You will take either a basket-weaving course or a philosophy course, depending on what your advisor decides. You estimate that the probability of getting an A in basket weaving is 0.85, while in philosophy it is 0.60.
Lab technicians at a major mdical lab can process an average of 400 blood samples a day with a standard deviation of 50 samples. The processing follows a normal distribution.
Does this mean that there is no chance of type I error? Think carefully, and explain the chances of type I error and the role of α in a two-tailed test.
Identify the significance level, the test statistic, and the critical value, state whether you are rejecting or failing to reject the null hypothesis statement and explain how the results could be used by the manager of the company.
complete the table by computing total revenue marginal revenue and the price elasticity of demand.nbspuse the mid
Although Bob raised the price to $1.75, sales of quarter-pound burgers rose to 8,200. Explain why this does not represent a violation of the law of demand.
A 2007 study reported in Science magazine stated that fifth-grade teachers scored a mean of 3.4 (out of 7) points for "providing evaluative feedback to students on their work." Assume that the sample size was 36 and the sample standard deviation w..
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