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The mean height of 8 year old girls in my daughter's school is 125 cm, with a standard deviation of 0.3, and the height has a bell-shaped distribution.
(a) What is the approximate percentage of girls between 124.4 cm and 125.6 cm?
(b) What is the approximate percentage of girls between 124.1 cm and 125.9 cm?
Doctors nationally believe that 68% of a certain type of operation are successful. In a particular hospital 47 of these operations were observed and 37 of them were successful. At a = 0.05 is this hospital's success rate different from the nationa..
the addition of a new accelerator is claimed to decrease the drying time of latex paint by more than 4. several test
Is there a significant difference in mean fetal heart rates by position? Run the test at a 5% level of significance.
Pepsi wants to use this technique to determine if they should bid for an exclusivity agreement with NCSU. Such an agreement would bind NCSU to sell Pepsi soft drink products exclusively on campus.
a bar owner was observing how many drinks his clients had on a saturday night. a sample of 24 customers randomly
A new process has been implemented and it is stated to have an average cycle time of 120 seconds. A sample of 50 cycles yielded an average cycle time of 115 seconds, with a standard deviation of 2 seconds.
Using a MANOVA, try to ascertain which version of the drug (A, B or C) shows the most promise. Perform the following analyses, and paste the SPSS output into your document.1. Exploratory Data Analysis.
A local computer sales office sent the following information about the computer system installation. Identify the critical path by computing the ET, LT, TS and FS values.
a store is running a promotion during which customers have two options for payment. option one is to pay 90 of the
Standard deviation of 200 units. What is the probability (area under standard normal curve) that demand will be greater than 900 units in a given month?
construct a frequency distribution table and describe the shape of the distribution, what score identifies the center for the distribution and are the scores clustered or spread across the scale?
Develop a frequency distribution table with proportions. What is an experiment? Can you describe what a Group Frequency Distribution Table is and what it looks like?
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