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An incomplete frequency disribution is given below: class intervals frequency 0-10 4 10-20 16 20-30 ---- 30-40 ---- 40-50 ---- 50-60 6 60-70 4 ................................. total................230 find the three missing frequencies of the table, given that median=33.5 , and mode = 34. Also calculate the mean using the empirical relationship between mean, median and mode.
The average age of statistics students nationwide is 22. The standard deviation is 2.5 years. Assume the age is a normally distributed variable. Find the probability that one student selected at random is older than 23.
If a sample of 20 dish owners is randomly selected the what would be the probability that more than 11 dish owners in the sample subscribe to at least one premium movie channel?
A doctor knows from experience that 20% of the patients to whom he gives a high blood pressure drug will have undesirable side effects. Assume the doctor gives that drug to ten of his patients
nterpret the meaning of the y-intercept, b(0), and the slope, b(1), in this problem. Use the prediction line developed in (a) to predict the GPA for a student a GMAT score of 600
Can you provide a clear, concise interpretation for the slope coefficient on price? Is that coefficient significantly different from zero? How do you know that?
At 0.01 significance level can we conclude that mean fare has increased? Determine the p-value?
Determine the mean and variance for the number of Version 3 that someone would expect to get if they were to purchase 18 of the board games at random.
a coin is tossed 4 times. let a be the event that the first toss is heads. let b be the event that the third toss is
Determine z score corresponding to minimum height requirement and determine z score corresponding to maximum height requirement.
What is wrong with this design? What confounds could be leading to the results of improved memory and problem-solving skills?
A standard deviation of 1.5. The distribution is normal. What proportion of faculty consume an amount between 4 and 6 cups?
The manufacturer wanted to determine if the tires were exceeding the guarantee. At the .05 significant level, it was concluded that the tires are exceeding the manufacturer's guarantee.
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