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Find the amounts of recycling material at collecting points according to the population or something else? The number of population is about 21, 850 people.
1) A random sample of customer order totals with an average of $78.25 and a population standard deviation of $22.50. Calculate a 90% confidence interval fro the mean, given a sample size of 75 orders
2. The mean BMI in patients free of diabetes was elsewhere reported as 28.2. The researcher producing the data in question 1 wonders if the BMI in his patients free of diabetes is higher than this reported number.
Choo Choo Paper Company produces papers of various thicknesses. A random sample of 49 cuts had a mean thickness of 30.3 mils with a sample standard deviation of 4 mils. a) Develop a 99% confidence interval for the mean thickness of the population. b)..
How many additional records have to be gathered.
The makers of Compute-All know that in the past, 40% of their sales were from people under 30 years old, 45% of their sales were from people who are between 30 and 50 years old, and 15% of their sales were from people who are over 50 years old...
You are proposed to accept or reject a lottery which gives X with probability 1/3 and -1 with probability 2/3. Before accepting you receive a signal "g" (good) or "b" (bad). The signal has precision q=P(g|win)=P(b|lose)>1/2.
Q1: Fill in the missing components of the following frequency distribution constructed for a sample size of 50:Class Frequency Relative frequency Cumulative relative frequency
Descriptive Statistics and Z-scores
Whats the temperature
Suppose X and Y are continuous random variables with joint pdf given by f(x, y) = 24xy if 0 2X].
If Vince charged $200 on his credit card with 18% APR and he paid his balance in full within the grace period, how much was he required to pay?
Directions: Read the following problem. In your submission, please include the following information: a. Determine if the problem is either a test of hypothesis, a confidence interval or something else and specify the 'key words' found in the proble..
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