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Could you answer the following multiple choice questions?Question: A cause-effect diagram is used in which of the following phases? AThe open phaseBThe narrowing phaseCThe close phaseDThe decision phaseQuestion: When the null hypothesis contains an equal sign, ___________. AThe hypothesis test has two tails (or rejection regions)BThe alternative hypothesis contains a "not equal to" signCIt can be rejected by the test statistic being significantly large or smallDAll of the above Question: The chi-square distribution is ____________. A Bell shapedB BimodalC LevelD Skewed Question: According to the Theory of Constraints, what is the goal of a company? A To increase salesB To decrease costsC To make moneyD To increase quality Question: Which of the following statements is MOST correct? A If "r" is greater than "1", there is a positive correlationB If "r" is less than one, there is a negative correlationC If "r" is less than one, but greater than 0, there is a positive correlationD If "r" is a negative number, there is a negative correlation Question: A salesman enters a food-processing facility and claims that his new juice box filling machine can save the company money, because he is 95% confident it has less variation from the nominal setting than the company's current machine. A random sample of 25 juice boxes from the salesman's machine yields a standard deviation of 0.09 ounce. A random sample of 16 juice boxes from the company's current machine yields a standard deviation of 0.13 ounce. What can we conclude? A The salesman is correct. We can say with 95% confidence that his machine has less variation from the nominal setting than the company's current machineB The salesman may be correct. It is not possible to prove he is correct, but indications are that his machine has less variation from the nominal setting than the company's current machineC We cannot show that the salesman is incorrect. We cannot prove that he is wrong, but indications are that the company's machine has the same variation as the salesman's machineD The salesman is incorrect. We cannot say with 95% confidence that the salesman's machine has less variation from the nominal setting than the company's current machine
Question: A company wanted to know if a special gas additive truly (and significantly) affected the gas mileage in their company vehicles. Use the data below to determine whether or not the additive significantly affected gas mileage. A Yes, because the T-statistic of 3.125 exceeded the T-critical value of 2.365B Yes, because the T-statistic of 4.51 exceeded the T-critical value of 2.365C No, because the T-statistic of 0.563 failed to exceed the T-critical value of 2.365D Yes, because the T-critical value is 1.895
Which measures of central tendency will always have but one (1) value for a set data?
At.01 significance level, can we conclude that there is more variation in selling prices of oceanfront homes?
The correlation between IQ and the verbal SAT score among the seniors at GWB High School is .90; it is significant. The mean IQ is 100 with a standard deviation of 10.
Suppose 18 customers are selected at random. What is the probability that between two and six people inclusive want hot peppers?
The accounting department at Weston Materials, Inc., a national manufacturer of unattached garages, reports that it takes two construction workers a mean of 32 hours and a standard deviation of 2 hours to erect the Red Barn model.
Should Katie conduct a between-subject ANOVA or a within-subject ANOVA? Describe your answer.
The effectiveness of treating respiratory infections with herbal remedies was studied. "Days of fever" was used to measure effects. Among 356 children treated with herbal remedies, teh mean number of days with was 0.36,
Over the past 30 years in the United States, there has been a strong negative correlation between the number of infant deaths at birth and the number of people over age 65. What lurking variables might be causing the changes in each of the variabl..
To avoid losing money, the top 5% (the heaviest 5%) is labeled overweight. A) What proportion of boxes is underweight?
An official of the Iowa Department of Highways wants to compare the useful life, in months, of two brands of paint used for striping roads. The mean number of months Cooper Paint lasted was 36.2 with a standard deviation of 1.114 months.
A 99% confidence interval estimate of the population mean can be interpreted to mean that we have 99% confidence that the true population mean will fall within the confidence interval estimate.
A process has a capability index of 0.40. This index is interpreted to mean that the process is:
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