Tim is choosing between two cell phone plans that offer the same amount of free minutes. Sprint’s plan charges $39.99 per month
with additional minutes costing $0.45. Verizon’s plan costs $44.99 with additional minutes at $0.40. How many additional minutes will it take for the two plans to cost the same?
1 answer:
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Answer:
First sample size, = 20
Second sample size, = 20
Sample mean of first sample, = 5.44
Sample mean of second sample, = 3.49
Sample Standard deviation of first sample, = 1.75
Sample Standard deviation of second sample, = 1.13
Step-by-step explanation:
Given - The sample mean tip amount for the 20 parties to which the waitress gave her name was $5.44, with a standard deviation of $1.75. These statistics were $3.49 and $1.13, respectively, for the 20 parties to which the waitress did not give her name. The data were not strongly skewed in either group.
To find - Use appropriate symbols for the six numbers reported in this paragraph.
Proof -
First sample size, = 20
Second sample size, = 20
Sample mean of first sample, = 5.44
Sample mean of second sample, = 3.49
Sample Standard deviation of first sample, = 1.75
Sample Standard deviation of second sample, = 1.13