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Suppose the monthly income of assistant managers of our local banks are normally distributed with mean of 40,000 and a standard deviation of 5,000. What is the z score for an income of 42,000?
given the amount of vitamin c in a medium orange is normally distributed with a mean of 70mg and a standard deviation
The following is based on the normal distribution of scores with mean equal to 90 and standard deviation equal to 3.5. Determine the probability of a score falling between a raw score of 84 and 96?
HIV found that 3 received a false positive test result. Test the researcher's claim of a 2% false positive rate at the a = 0.05 level. What can you conclude?
A range of values constructed from sample data so that the parameter occurs within that range at a specified probability is:
Assume a mean wage of $1,000 and standard deviation of $100. What's the probability of finding an employee with a wage of between $790 and $1000?
Predict with 95% confidence the test score at a school where 50% of the mathematics teachers have mathematics degrees, the mean age is 43, and the mean annual income is $48,30.
Construct a 95% confidence interval for the mean amount of oil recovered from all wells in this area using t procedures - How does the t interval that you constructed compare with this interval? Should the t procedures be used with this data?
tree diagram for a probability experiment.identify the sample space of the probability experiment and determine the
A sample of 350 lenses and found 5 lenses with surface defects. Formulate an appropriate test for the qualification of the polishing machine using an α = 0.05."
1.assuming the population is large which sample size will give the smallest standard deviation to the statistic?a.n
A 90% confidence interval estimate for a population mean was computed to be (38.2, 59.4). Determine the mean of the sample, which was used to determine the interval estimate.
They also know that the distribution of loss from fire has a skewed distribution; many have $0.00 losses and a few have large losses.
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