Mathematics, 15.04.2021 21:00, copelandgarret9972
A researcher was interested in the relationship between a swimmer’s hand length and corresponding time to complete the 100-meter freestyle. The researcher selected a random sample of twenty swimmers from all participants in a swim competition. Assuming all conditions for inference are met, which of the following significance tests should be used to investigate whether there is convincing evidence, at a 5 percent level of significance, that a longer hand length is associated with a decrease in the time to complete the 100-meter freestyle?
A. A matched-pairs t -test for a mean difference
B. A two-sample t -test for a difference between means
C. A two-sample z-test for a difference between proportions
D. A chi-square test of independence
E. A linear regression t-test for slope
Answers: 1
Mathematics, 22.06.2019 00:30, daijahbuck
y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?
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Mathematics, 22.06.2019 01:40, Conner5459
Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a diamond or heart. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability of randomly selecting a diamond or heart or club. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability of randomly selecting queen or club. (type an integer or a decimal rounded to three decimal places as needed.)
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A researcher was interested in the relationship between a swimmer’s hand length and corresponding ti...
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