Posted: April 13th, 2023
Stat 4 essay
Researchers measured the data speeds for a particular smartphone carrier at 50 randomly selected airports. The highest speed measured was 74.6 megabits per second (Mbps). The complete set of 50 data speeds has a mean of 17.05 Mbps and a standard deviation of 20.54 Mbps. What is the z-score of the highest speed measured (74.6 Mbps)? Round your answer to two decimal places; add trailing zeros as needed.
The z-score of the highest speed measured is [DataZ].
Question 41 pts
The blood platelet counts of a random sample of 873 women have a normal distribution with a mean of 253.1 and a standard deviation of 62.7 (all units are in 1,000 cells per microliter). Use the empirical rule to find the approximate percentage of women with platelet counts between 127.7 and 378.5. Enter a percentage as an integer or a decimal; do not round and do not include a"%".
The approximate percentage of women with platelet counts between 127.7 and 378.5 is [PlateletEmp] percent.
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Question 51 pts
The body temperatures of a group of healthy adults have a normal distribution with a mean of 98.37 °F and a standard deviation of 0.58 °F. Use the empirical rule to find the approximate percentage of healthy adults with body temperatures between 97.21 °F and 98.95 °F. Enter a percentage as an integer or a decimal; do not round and do not include a"%".
The approximate percentage of healthy adults with body temperatures between 97.21 °F and 98.95 °F is [TempEmp] percent.
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