Mathematics, 18.10.2019 21:10 abbyg2710
Young children in the united states are exposed to an average of 4.0 hours of background
television per day. having the television on in the background while children are doing other activities
may have adverse consequences on a child’s well-being. you have a research hypothesis that children
from low-income families are exposed to more than 4.0 hours of daily background television. in order
to test this hypothesis, you have collected a random sample of 60 children from low-income families
and found that these children were exposed to a sample mean of 4.5 hours of daily background
television. based on a previous study, you are willing to assume that the population standard deviation
is 1.0 hours. use .01 as the level of significance.
a) develop hypotheses that can be used to test your research hypothesis.
b) what is the p-value based on your sample of 60 children from low-income families? what is your
hypothesis test decision based on p-value approach?
c) repeat the test using the critical value approach. what is your hypothesis test decision?
d) state your conclusion for the study.
Answers: 3
Mathematics, 21.06.2019 13:00
Adice is rolled 5 times. how many possible rolls are there? ( determine the number of outcomes using only the fundamental counting principal )
Answers: 1
Mathematics, 21.06.2019 17:30
Me with this one question, and i'll upvote the brainliest answer
Answers: 2
Mathematics, 21.06.2019 17:30
Δabc is dilated by a scale factor of 3 with the origin as the center of dilation to form δa′b′c′. the slope of is -1.2. the length of is p units, the length of is q units, and the length of is r units. the slope of is . the length of is units.
Answers: 2
Mathematics, 22.06.2019 00:40
Ican interpret and represent the remainder in division calculations sensibly for the context (eg 27.4 in calculating average height in cm: $27.44 if it represents an amount of money) solve the following problems. 15) the wildlife park charges $25.50 dollars per person to enter their park if the park made $15096 dollars today, how many people entered the park? 16) ms adams plus 2,230 other keen runners ran a marathon: between them they ran 94817.5km. how many km did each competitor run?
Answers: 1
Young children in the united states are exposed to an average of 4.0 hours of background
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