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Could you please explain in words how you figure out deciles, quartiles, kurtosis, skewness in Excel? How do you find the sum count, largest, and smallest in Excel?
What is the value of the population mean? What is the best estimate of this value?
Mattel Corporation produces a remote-controlled car that requires three AA batteries. The mean life of these batteries in this product is 35 hours with a standard deviation of 5.5 hours. As part of its testing program Sony tests samples of 16 batt..
Form a frequency distribution and a percentage distribution that have class intervals with the upper class limits $99, $119, and so on.
Determine the distributions given below represent a probability distribution. Justify your answer.
The last lessons have spent a lot of time describing the slope and intercept terms (and their variances) of the one-variable sample regression function.
The upper limit of a 95% confidence interval for the population mean would equal:
X is a normally distributed random variable with mean 10 and variance 24. a. Find P(X bigger 14) b. find P(8 smaller X smaller 20)
Temperature in a certain city for the month of June follows a uniform distribution over the interval 61º F to 91º F. What is the probability that a randomly selected June day has a temperature that exceeds 70º F?
what is the chance the average contents of the cans will be less than advertised and what will be the standard deviation of the number of men who help at home, based on the first survey
It is not unusual for a battery to have life span that is more than 2470 hours as the z-score is within 2 standard deviations of mean.
At 0.01 level of significance, is there evidence that mean price is higher at Whole Foods Market than at Fairyway supermarket? Interpret the meaning of p-value in (i).
A customer wants delivery to be ensured between 10 am and 2 pm. Your truck leaves the factory at 4 am and time taken to reach the customer is normally distributed with an average of 8 hrs and a standard deviation of 1 hr.
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