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A manufacturing firm has collected information on the number of defects produced each day for the past 50 days. The data have been described by the accompanying Minitab box-and-whisker plot.
a. What is the approximate value of the median? The first and third quartiles?
b. What do the asterisks (*) at the right of the display indicate? What implications might they have for the production supervisor?
c. Does the distribution appear to be symmetric? If not, is it positively skewed or negatively skewed?
Use the p-value approach and test to determine if the average yearly income of marketing managers in the East is significantly different from the West.
Finding probability for the given values of the uniform density curve
He recorded the store's sales for those four Wednesdays and then recorded the store's sales for the four alternate Wednesdays, when the signs were not displayed. On the Wednesdays with the sign, the sales were 83, 73, 81, and 79. On the Wednesdays..
a television sports commentator wants to estimate the proportion of citizens who follow professional football. complete
Choose a listed company starting with the first letter of your last name. For example, if your last name is Buffett then you may choose Bed Bath & Beyond Inc
a fast food outlet claims that the mean waiting time in line is less than 3.7 minutes. a random sample of 20 customers
a biology professor claimed that the proportions of grades in his classes are the same. a sample of 100 students showed
How do you create new data set with Exponential, cube squared and log values for each variable when working with regression analysis. dependent variable is sales and independent variable is Profit quantity discount and shipping_cost. You are worki..
Estimate the probability that it is private insurance
The distribution of amounts spent is approximately normal with a standard deviation of $10. Compute the probability of selecting a credit card customer at random and finding the customer charged between $70 and $83.
In part b, the sample have greater variability than part a, but the sample sizes are unchanged. how does the larger variability affect the size of the standard error for the sample mean?
The population standard deviation can be assumed known as .24. What is the 95% confidence interval estimate of the mean undergraduate GPA for students admitted to the top graduate business schools.
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