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A study conducted at a certain college shows that 64% of graduates find a job in their chosen field within the first year after graduation. Find the probability among 6 randomly selected graduates, that at most 2 of them find a job in his or her chosen field within a year.
Given the data set body-weight.sav, use SPSS to calculate the 90%, 95% and 99% confidence intervals for the mean of the variable weight.
Three are selected, at random, without replacement from the batch. What is the probability that the third is not defective given that one of the previous two are defective?
Does this sample provide enough evidence to conclude that self-esteem scores for these adolescents are significantly different from those of the general population? Use a two-tailed test with x =.01.
Estimate the 95% confidence interval for the proportion of the electorate that support this policy.
A sample of 81 account balances of a credit company showed an average balance of $1,200 with a sample standard deviation of $126. You want to determine if the mean of all account balances is significantly different from $1,250. Use a .05 level of ..
Define the null and alternate hypotheses for the statistical test to find out if there is evidence that average weight of Smoky Bear moving van is more than 12,000 lb.
Demand for a popular athletic shoe is nearly constant at 800 pairs per week for a regional division of a national retailer. The cost per pair is $54.
What is the probability that he completed the assignments?
What is the mean and standard deviation for this groups' SAT verbal score? What is the 95% confidence interval for the mean SAT verbal score for these students?
What is the major difference between finding significance and confidence intervals using population samples or using population proportions?
What is the probability that among 10 true hypertensives at least 50% are being treated appropriately and are complying with this treatment?
If random sample of size n = 16 are selected, can we say anything about the xbar distribution of sample means?
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