Mathematics, 19.05.2021 18:40 corvettapj6583
An online streaming service providing television programs claims that a 30-minute program will stream with advertisements that average 45 seconds. A consumer advocacy group is investigating to see if this claim is true. They recorded the times of 21 randomly selected advertisements. The times are listed below:
Time (seconds) 45 45 43 50 50 45 43 50 45 49 46 48 42 46 44 52 48 45 46 50 48
The mean and standard deviation for these times are 46.67 and 2.78 seconds respectively. Do these data provide convincing evidence that the true mean advertisement length is longer than 45 seconds?
Answers: 2
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Mathematics, 21.06.2019 17:50
Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000
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Mathematics, 21.06.2019 19:00
Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18
Answers: 1
An online streaming service providing television programs claims that a 30-minute program will strea...
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