Mathematics, 16.10.2019 19:20 stankyweezle
Astudy was made to determine if the subject matter in a physics course is better understood when a lab constitutes part of the course. students were randomly selected to participate in either a 3-semesterhour course without labs or a 4-semester-hour course with labs. in the section with labs, 11 students made an average grade of 85 with a standard deviation of 4.7, and in the section without labs, 17 students made an average grade of 79 with a standard deviation of 6.1. would you say that the laboratory course increases the average grade by as much as 8 points? use a p-value in your conclusion and assume the populations to be approximately normally distributed with equal variances. g
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Mathematics, 21.06.2019 16:10
The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.
Answers: 1
Mathematics, 21.06.2019 23:30
Acar loses a quarter of its value every year. it is originally worth $35,000. to the nearest dollar,how much will the car be worth in 8 years?
Answers: 1
Astudy was made to determine if the subject matter in a physics course is better understood when a l...
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