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A study on the effects of television viewing of children reports that children watch an average...
INSTRECTION: -show sufficient work to support your answes. if you have to make any assumptions, state...
INSTRECTION:
-show sufficient work to support your answes. if you have to
make any assumptions, state them clearly.
-all confidence interval and hypothesis test results need to
be expressed in sentenses that would make senense.
-round your answers to 4 decimal place.
7. (7 points) We play a game in which you draw one card from a standard deck of cards. If you drawa card with a value of 5 or less, I will pay you $60. If not, you...
A study showed that the average number of hours children in the US watch television each...
A study showed that the average number of hours children in the US watch television each day is 4 hours with a standard deviation of 1.6 hours. If a group of 64 children is selected at random, what is the probability that the average time these children watch television more than 3.5 hours a day?
In 2012, the Nielsen company reported that Americans watch 34 hours on average of TV per...
In 2012, the Nielsen company reported that Americans watch 34 hours on average of TV per week. Imagine the standard deviation is 9.5 hours. If Gail wants her family to watch very little TV and hopes they will fall at the 15th percentile for TV viewing, how many hours is the limit to their viewing hours each week? A. 33.71 B. 26.28 C. 24.22 D. 31.83 Sometimes the null hypothesis is considered to be Select one: A. the exciting hypothesis....
A survey is being planned to determine the average amount of time preschool children watch television....
A survey is being planned to determine the average amount of time preschool children watch television. A pilot survey indicated that the mean time per week is 12 hours, with a standard deviation of 3 hours. It is desired to estimate the mean viewing time within one-quarter hour. The 0.95 degree of confidence is to be used. How do you calculate how many preschool children should be surveyed? Why is it important to make sure your sample size is sufficient?
A schoolteacher is concerned that her students watch more TV than the average American child. She...
A schoolteacher is concerned that her students watch more TV than the average American child. She reads that according to the American Academy of Pediatrics (AAP), the average American child watches 4 hours of TV per day (μ = 4.0 hours). She records the number of hours of TV each of her six students watch per day. The times (in hours) are 3.8, 4.6, 2.9, 5.5, 4.4, and 2.8. (a) Test the hypothesis that her students watch more TV than...
Researchers report that children between the ages of 2 and 5 years watch an average of...
Researchers report that children between the ages of 2 and 5 years watch an average of 25 hours of television per week. Assume that the variable time is distributed normally with a standard deviation of 2 hours. A random sample of 40 children between the ages of 2 and 5 was chosen. What is the probability that the average time of the selected group of 40 children between the ages of 2 and 5 watch more than 25.5 hours of...
Researchers report that children between the ages of 2 and 5 years watch an average of...
Researchers report that children between the ages of 2 and 5 years watch an average of 25 hours of television per week. Assume that the variable time is distributed normally with a standard deviation of 2 hours. A random sample of 40 children between the ages of 2 and 5 was chosen. Let X be the average time a randomly selected group of 40 children between the ages of 2 and 5 watch television per week? Then I 25 NI...
You are testing an hypothesis about how much time preschool children watch television per day. You hypothesize that...
You are testing an hypothesis about how much time preschool children watch television per day. You hypothesize that the population mean is 212 minutes. Which of the following would be an appropriate null hypothesis for such a study? Ho H 212 minutes Ho: H212 minutes HoiX 212 minutes 212 minutes Ho: X
A. C. Neilsen reported that children between the ages of 2 and 5 watch an average...
A. C. Neilsen reported that children between the ages of 2 and 5 watch an average of 25 hours of television per week. Assume the variable is normally distributed and the standard deviation is 3 hours. If 20 children between the ages of 2 and 5 are randomly selected, find . Give answer to three decimal places.
Using the accompanying data of a TV viewing survey, conduct a hypothesis test to determine if...
Using the accompanying data of a TV viewing survey, conduct a hypothesis test to determine if married individuals watch less TV than single individuals. Assume that the population variances are unequal. E Click the icon to view the TV viewing survey. Survey data Х Is there sufficient evidence at the 0.05 level of significance that the married individuals watch less TV than single individuals? Determine the null hypothesis, Ho, and the alternative hypothesis, Hy. Let married people be population 1...
INSTRECTION:
-show sufficient work to support your answes. if you have to
make any assumptions, state them clearly.
-all confidence interval and hypothesis test results need to
be expressed in sentenses that would make senense.
-round your answers to 4 decimal place.
7. (7 points) We play a game in which you draw one card from a standard deck of cards. If you drawa card with a value of 5 or less, I will pay you $60. If not, you...
Researchers report that children between the ages of 2 and 5 years watch an average of 25 hours of television per week. Assume that the variable time is distributed normally with a standard deviation of 2 hours. A random sample of 40 children between the ages of 2 and 5 was chosen. What is the probability that the average time of the selected group of 40 children between the ages of 2 and 5 watch more than 25.5 hours of...
Researchers report that children between the ages of 2 and 5 years watch an average of 25 hours of television per week. Assume that the variable time is distributed normally with a standard deviation of 2 hours. A random sample of 40 children between the ages of 2 and 5 was chosen. Let X be the average time a randomly selected group of 40 children between the ages of 2 and 5 watch television per week? Then I 25 NI...
You are testing an hypothesis about how much time preschool children watch television per day. You hypothesize that the population mean is 212 minutes. Which of the following would be an appropriate null hypothesis for such a study? Ho H 212 minutes Ho: H212 minutes HoiX 212 minutes 212 minutes Ho: X
Using the accompanying data of a TV viewing survey, conduct a hypothesis test to determine if married individuals watch less TV than single individuals. Assume that the population variances are unequal. E Click the icon to view the TV viewing survey. Survey data Х Is there sufficient evidence at the 0.05 level of significance that the married individuals watch less TV than single individuals? Determine the null hypothesis, Ho, and the alternative hypothesis, Hy. Let married people be population 1...
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