Consider the following. X = The number of hours a child watches television on a given...

Consider the following.

X = The number of hours a child watches television on a given day

Give the range of values that the random variable X may assume.

{0, 1, 2, 3, ...} {x | 0 ≤ x ≤ 24} {1, 2, 3, ..., 24} {x | 0 < x < 24} {x | 1 ≤ x ≤ 24}

Classify the random variable as one of the following.

finite discrete infinite discrete continuous

Expert Solution

Ans:

{x | 0 ≤ x ≤ 24}

continuous

orchestra answered 2 years ago

A social scientist claims that the average adult watches less than 26 hours of television per...

A social scientist claims that the average adult watches less than 26 hours of television per week. She collects data on 50 individuals’ television viewing habits and finds that the mean number watching television was 22.4 hours. If the population is normally distributed with a standard deviation of 8 hours, can we conclude at the 1% statistical significance level that she is right? Use the critical value and the test statistic to test the null hypothesis. Then calculate the p-value...

The number of hours per week that the television is turned on is determined for each...

The number of hours per week that the television is turned on is determined for each family in a sample. The mean of the data is 3535 hours and the median is 31.231.2 hours. Twenty-four of the families in the sample turned on the television for 2020 hours or less for the week. The 6th percentile of the data is 2020 hours. Step 2 of 5: Approximately how many families are in the sample? Round your answer to the nearest...

he number of hours of television watched per day by a sample of 28 people is...

he number of hours of television watched per day by a sample of 28 people is given below: 4, 1, 5, 5, 2, 5, 4, 4, 2, 3, 6, 8, 3, 5, 2, 0, 3, 5, 9, 4, 5, 2, 1, 3, 4, 7, 2, 9 -What percent of people watched more than four hours of television per day? (Type the percentage rounded to one decimal place without the % sign.) -About 64% of the people watch no more than...

The number of hours 12 students watched television during the weekend and the scored of each...

The number of hours 12 students watched television during the weekend and the scored of each student who took a test the following Monday are listed below. Hours 0 1 2 3 3 5 5 5 6 7 7 10 Test 96 85 82 74 87 68 76 70 66 65 75 50 a) Find linear regression equation using correct notation (for statistics) the given problem, round coefficients to 3 decimals. (no sentence here) b) What is value of the...

Considerthepossibilitythatgovernmentspendingincreasestheamount of hours to be worked in a given time period, say by providing child care....

Considerthepossibilitythatgovernmentspendingincreasestheamount of hours to be worked in a given time period, say by providing child care. Assume again that the initial amount of consumption and leisure are still affordable after an increase in spending. How will an increase in government spending affect consumption, hours worked, output and welfare? [Hint: think about how we constructed the bounds on our labor leisure model in terms of hours worked] Suppose instead of do- mestic government spending we consider remittances sent from abroad (think...

Consider the following data of the number of hours 12 students spent online during the weekend...

Consider the following data of the number of hours 12 students spent online during the weekend and the scores of each student who took a test the followingMonday. Hrs spent online(x): 0 1,2,3,3,5,5,5,6,7,7,10. Test scores(y): 96,85,82,74,95,68,76,84,58,65,75,50.a. Find the sample linear correlation coefficient and interpret it. b. Is the population correlation coefficient significant? [ use ? = 0.05]. c. Find the equation of the regression line. What is the slope of the line? Interpret this value in the context? d. What...

6. Consider the following data of the number of hours 12 students spent online during the...

6. Consider the following data of the number of hours 12 students spent online during the weekend and the scores of each student who took a test the followingMonday. Hrs spent online(x) 0 1 2 3 3 5 5 5 6 7 7 10 Test scores(y) 96 85 82 74 95 68 76 84 58 65 75 50 a. Find the sample linear correlation coefficient and interpret it. b. Is the population correlation coefficient significant? [ use α= 0.05] c....

Given the following pairs of data where x is the number of years of experience in...

Given the following pairs of data where x is the number of years of experience in a certain company and y is the annual salary: Determine the equation of the linear regression line. Round the slope and y-intercept to the nearest integers. Using your answer in (a), estimate the starting salary for a new hire. Using your answer in (a), estimate the number of years (to the nearest year) an employee would have to work in the company in order...

Given the following data of temperature (x) and the number of times a cricket chirps in...

Given the following data of temperature (x) and the number of times a cricket chirps in a second (y), run regression analysis and state the regression equation as long as there is a statistically significant linear relationship between the variables. Cricket Chirps per Second Temperature (F) 20 88.6 16 71.6 19.8 93.3 18.4 84.3 17.1 80.6 15.5 75.2 14.7 69.7 17.1 82 15.4 69.4 16.2 83.3 15 79.6 17.2 82.6 16 80.6 17 83.5 14.4 76.3

The number of hours studied, x, is compared with the grade received, y. x 4 7...

The number of hours studied, x, is compared with the grade received, y. x 4 7 1 6 4 y 75 75 65 95 60 (a) Complete the preliminary calculations: SS(x), SS(y), and SS(xy). (SS(x)) (SS(y)) (SS(xy)) (b) Find r. (Give your answer correct to three decimal places.)

Question