Mathematics, 27.11.2019 02:31 abecobos37
The attention span of little kids (ages 3–5) is claimed to be normally distributed with a mean of 15 minutes and a standard deviation of 4 minutes. a test is to be performed to decide if the average attention span of these kids is really this short or if it is longer. you decide to test the hypotheses h0: μ = 15 versus ha: μ > 15 at the 5% significance level. a sample of 10 children will watch a tv show they have never seen before, and the time until they walk away from the show will be recorded. if, in fact, the true mean attention span of these kids is 18 minutes, what is the probability of a type ii error?
Answers: 3
Mathematics, 21.06.2019 15:00, epicchicken420
Three coins are flipped. what is the probability that there will be at least two tails?
Answers: 1
Mathematics, 21.06.2019 15:30, 30352
Hurry and answer this! circle x with a radius of 6 units and circle y with a radius of 2 units are shown which steps would prove the circles similar? translate the circles so they share a common center point, and dilate circle y by a scale factor of 4. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 4. translate the circles so they share a common center point, and dilate circle y by a scale factor of 3. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 3
Answers: 1
Mathematics, 21.06.2019 23:20, kawaiiiiiiii4715
Triangle xyz, with vertices x(-2, 0), y(-2, -1), and z(-5, -2), undergoes a transformation to form triangle x? y? z? , with vertices x? (4, -2), y? (4, -3), and z? (1, -4). the type of transformation that triangle xyz undergoes is a . triangle x? y? z? then undergoes a transformation to form triangle x? y? z? , with vertices x? (4, 2), y? (4, 3), and z? (1, 4). the type of transformation that triangle x? y? z? undergoes is a .
Answers: 2
The attention span of little kids (ages 3–5) is claimed to be normally distributed with a mean of 15...
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