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Q1) Bide-a-While efficiency hotel, which caters to business workers who remain for extended periods of time (weeks or months), offers room service. Marketing director is interested in trying to find out whether or not she can advertise "room service in under 30 minutes, or order is free". You will be asked to recognize how many delivery times she must sample to evaluate true mean delivery time to within 5 minutes at 90% reliability level? Suppose that standard deviation for delivery times is 18.2 minutes.
Q2) According to new poll, 16.2% of credit cardholders in United States shave used their credit card to create a purchase on internet. You will be asked to recognize how large sample must be taken if true proportion is to be evaluated to within 1.5% at 95% reliability level? You may use sample proportion in computations of the sample size.
Find the probability of exactly 6 Mexican-Americans among 12 jurors.
Using the following data on 15 workers, construct an exact 95% confidence interval for µ.
Multiple comparison procedures are going to be done using the Bonferroni method with α = 0.10. The value of t** is 2.2426. The smallest minimum significant difference (MSD) for finding a difference between groups is computed as 17.68. The correct ..
High levels of glucose in the blood are indications of diabetes, which is becoming more prevalent in the United States. Diabetes can lead to many complications such as blindness and heart disease. A random sample of 180 individuals had their blood su..
The number of customers at a specialty meat store averages about 1500/day. The exact number varies from day to day. On Fridays before long weekends, the number of customers increases to about 3000. Which of the following statements is correct
Make use of Excel to determine the right-tail p-value.
Mean and standard deviation are 584.6 and 34.28
The average number of days absent per student per year at West Valley School is 17 days with a standard deviation of 4 days. How many standard deviations from the mean is 6 absent days?
Find out the range (R), variance (V) and standard deviation (s) for the given set of values:
Find the value of the standard normal random variable z, called z 0 such that:
Be sure to include information about how you would use the concept of probabilities to apply to profiles for hiring more satisfied individuals.
If the standard deviation is $89.46, find the probability that a randomly selected customer spends between $550.67 and $836.94.
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