Do our children spend enough time enjoying the outdoors and playing with friends, or are they...

Do our children spend enough time enjoying the outdoors and playing with friends, or are they spending more time glued to the television, computer, and their cell phones? A random sample of 250 youth between the ages of 8 and 18 showed that 160 of them had a TV in their bedroom and that 130 had a video game console in their bedroom.
(a)
Estimate the proportion of all 8- to 18-year-olds who have a TV in their bedroom.

Calculate the 95% margin of error for your estimate. (Round your answer to three decimal places.)

(b)
Estimate the proportion of all 8- to 18-year-olds who have a video game console in their bedroom.

Calculate the 95% margin of error for your estimate. (Round your answer to three decimal places.)

Expert Solution

please rate me high.

orchestra answered 2 years ago

Children of Acklins spend a lot of time playing in the very calm and shallow water....

Children of Acklins spend a lot of time playing in the very calm and shallow water. Another of their favorite pastimes is collecting Styrofoam blocks that wash up on their normally prestine beaches. The children have styrofoam blocks that are 0.75m, 0.50m wide and 0.25m high. Little Johnny has started piling dry sand into blocks that he is pretending is a boat. Determine the (i) depth to which the stryofoam block sinks without any sand (the depth of immersed styrofoam)...

1. Among children who spend much time playing alone, what factors distinguish those who are likely...

1. Among children who spend much time playing alone, what factors distinguish those who are likely to have adjustment difficulties from those who are well-adjusted and socially skilled? 2. Which types punishment for misbehaving preschooler do you endorse, and which types do you reject?

spend some time observing the children in your care setting. what do you notice about the...

spend some time observing the children in your care setting. what do you notice about the cues that individual children demonstrate ?what do they mean?

a) A researcher wants to test if boys spend more time playing sports on average than...

a) A researcher wants to test if boys spend more time playing sports on average than girls. Data is collected, resulting in the table below. It is known that the times for sports have a normal distribution in general. Group n Average number of hours SD Boy 35 5.2 3.3 Girl 25 3.5 5 Compute the test statistic that is corresponding to the test in the question 9. Round your answer to two decimal digits. b) Let the significance level...

An online gaming company collects data on the amount of time 250 users spend playing a...

An online gaming company collects data on the amount of time 250 users spend playing a game and the amount they spend in dollars on in-game purchases. A statistician working for the company runs a regression analysis relating the total purchase amount to the minutes spent playing (Play). The output of this analysis is shown below: Predictor Coeff SE-coeff T P Constant .8911 .26411 3.3740 0.001 Excercise .1720 .07861 2.1880 .030 S= 0.461 R-Sq=...

The average amount of time boys and girls aged 7 to 11 spend playing sports each...

The average amount of time boys and girls aged 7 to 11 spend playing sports each day is believed to be the same. A study is done and data are collected, resulting in the data in the following table. Sample Size Average Number of Hours Playing Sports per day Sample Standard Deviation Girls 9 2 0.866 Boys 16 3.2 1.00 a. Define the appropriate parameter(s) and state the hypotheses for testing if this study provides evidence that the mean amount...

What will you do to educate your friends, relatives, children, and parents to ensure they do...

What will you do to educate your friends, relatives, children, and parents to ensure they do not fall in one of these traps (investment scams)? How does one determine if an offer is real or a scam?

The university wants to examine whether students spend enough time on their remote classes after switching...

The university wants to examine whether students spend enough time on their remote classes after switching to the online teaching. The university staff sends a survey to 50 random students and asks for the study time per week after the spring break. The mean study time per week of the sample is 25.5 hours. It is believed that the population standard deviation is 3.5 hours. The university wants to know whether the students have spent at least 23 hours per...

The time married men with children spend on child care averages 6.0 hours per week (Time,...

The time married men with children spend on child care averages 6.0 hours per week (Time, March 12, 2012). You belong to a professional group on family practices that would like to do its own study to determine if the time married men in your area spend on child care per week differs from the reported mean of 6.0 hours per week. A sample of 40 married couples will be used with the data collected showing the hours per week...

The time married men with children spend on child care averages 6.4 hours per week {Time,...

The time married men with children spend on child care averages 6.4 hours per week {Time, March 12, 2012). You belong lo a professional group on family practices that would like to do its own study to determine if the time married men in your area spend on child care per week differs from the reported mean of 6.4 hours per week. A sample of 40 married couples will be used with the data collected showing the hours per week...

Question