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Compute a 95% confidence interval for the population mean, based on the sample 32, 38, 31, 34, 35, 32, and 36. Change the number from 36 to 14 and recalculate the confidence interval. Using the results, describe the effect of an outlier or extreme value on the confidence interval.
Can we conclude that car size is dependent on marital status? YES or NO (circle one)
A IRS auditor randomly selects 3 tax returns from 48 returns of which 9 contain errors. What is the probability that she selects none of those containing errors? Round to four decimal places.
The researcher also gathers data on age and major to see if there is any connection between these varibales and frequency of sexual harassment.
What should ING's General Counsel do to minimize ING's expected costs?
A Starbucks manager decides to study waiting times of customers for service at the lunch time rush hour 1100-1200. He observes three customers to measure the time the customer enters the line to the time he or she reaches the counter.
Will you reject your null hypothesis that all population means are equal or will you not reject? Choose the best answer from the options below.
According to Central Limit Theorem, how big of sample is essential to be sure sampling distribution of sample means is normally distributed.
You want to determine if the sample result gives good evidence that the true amount of the compound is not equal to 2 gms. Carry out the test, find the P-value, and state your conclusion.
Archaeopteryx is an extinct beast having feathers like a bird but teeth and a long bony tail like a reptile. Five fossil specimens have preserved both the femur and humerus bones. The measurements (in centimeters) for each bone are given below.
Significance level to test the claim that less than half (.5) of all executives identify that error as being the most common job interviewing error.
What is the probability that at least one of the 40 shuttle missions scheduled over the next 5 years results in a critical-item failure?
A normal population has a mean of 75 and a standard deviation of 5. You select a sample of 40. Compute the probability the sample mean is
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