SAT, 22.04.2021 17:40 alyssaxsanchez
The head of public safety notices that the average driving speed at a particular intersection averages 35 mph with a standard deviation of 7.5 mph. After a school speed limit sign of 20 mph is placed at the intersection, the first 40 cars travel past at an average speed of 32 mph. Using the .01 alpha level, was there a significant change in driving speed? use the four steps hypothesis​
Answers: 1
SAT, 25.06.2019 06:50
Heights of men on a baseball team have a bell-shaped distribution with a mean of 177 cm and a standard deviation of 6 cm. using the empirical rule, what is the approximate percentage of the men between the following values? a. 159 cm and 195 cm b. 165 cm and 189 cm a. 89% of the men are between 159 cm and 195 cm. (round to one decimal place as needed.) b. 89% of the men are between 165 cm and 189 cm. (round to one decimal place as needed.)
Answers: 3
SAT, 25.06.2019 16:30
Feedback is given with little or no reservation 1.supportive 2.high-monitoring 3.positive 4.low-monitoring ?
Answers: 1
The head of public safety notices that the average driving speed at a particular intersection averag...
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