Mathematics, 04.09.2019 02:30 ZBSJ
Most dermatologists recommend using sunscreens that have a sun protection factor (spf) of at least 30. one of the authors wanted to find out whether the spf of sunscreens used by students at her school exceeds this value on average? to collect data, the author surveyed students in her introductory statistics course and found that in a sample of 52 students the mean spf was 34.55 and the standard deviation of spf was 20.12. the data were not strongly skewed. use the theory-based inference applet to find and report the 95% confidence interval for the parameter of interest. round answers to 4 decimal places, e. g. 0.7523. we are 95% confident that the mean spf level of sunscreen used by all cal poly students is between and .
Answers: 3
Mathematics, 21.06.2019 14:50
Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?
Answers: 3
Mathematics, 21.06.2019 23:00
Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.
Answers: 2
Most dermatologists recommend using sunscreens that have a sun protection factor (spf) of at least 3...
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