Mathematics, 01.02.2021 21:30 stefancvorovic1
A cell phone company offers two plans to its subscribers. At the time new subscribers sign up, they are asked to provide some demographic information. The mean yearly income for a sample of 39 subscribers to Plan A is $55,575 with a standard deviation of $8,970. For a sample of 29 subscribers to Plan B, the mean income is $59,475 with a standard deviation of $6,942.
At the .025 significance level, is it reasonable to conclude the mean income of those selecting Plan B is larger? Hint: For the calculations, assume the Plan A as the first sample.
The test statistic is . (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)
The decision is
the null hypothesis that the mean of Plan B is larger.
The p-value is
(Round your answer to 2 decimal places.)
Answers: 3
Mathematics, 21.06.2019 22:00, alexamorantess
Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.
Answers: 1
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