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QUESTION 10 In a national survey, it was found that men spend on average at most...
1. state the hypothesis and identify the claim with the correct hypothesis. Also one or two...
1. state the hypothesis and identify the claim with the correct
hypothesis. Also one or two tailed test?
2. Compute the test value
3. Find the P-value
4. Make the decision to reject or not reject the null
hypothesis
5. Summarize the results
Question 4 of 10 (1 point) View problem in a pop-up Men spend an average of 29 minutes per day on weekends and holidays exercising and playing sports. They spend an average of 23 minutes per day...
A survey of 93 men found that an average amount spent on St. Patrick's day of...
A survey of 93 men found that an average amount spent on St. Patrick's day of $51 with a standard deviation of $16. A similar survey of 87 women found they spent an average of $44 with a standard deviation of $18. When testing the hypothesis (at the 5% level of significance) that men spend more than women on St. Patrick's day, what is the test statistic? (please round your answer to 2 decimal places)
14. According to a survey, the average college student spends only 2.2 hours on homework per...
14. According to a survey, the average college student spends only 2.2 hours on homework per day in the year 2000. To test if the amount of time spent on homework per day differed last year from 2000, a researcher decides to do a hypothesis test, at a 10% significance level. He surveys 25 college students randomly and asks them about the number of hours they spend on homework per day, on average, last year. From the data, the sample...
13 . According to the American Time Use Survey, the typical American spends 154.8 minutes per...
13 . According to the American Time Use Survey, the typical American spends 154.8 minutes per day watching television. A survey of 50 Internet users results in a mean time watching television per day of 128.7 minutes, with a standard deviation of 46.5 minutes. Using 0.05 level of significance to test the claim that Internet users spend less time watching television. 14. College math instructors suggest that students spend 2 hours outside class studying for every hour in class. So,...
1. A survey conducted by the American Automobile Association (AAA) showed that a family of four...
1. A survey conducted by the American Automobile Association (AAA) showed that a family of four spends an average of $215.60 per day while on vacation. Suppose a sample of 28 families of four vacationing at Niagara Falls resulted in a sample mean of $252.45 per day and a sample standard deviation of $70.54 a. a. Develop a 98% confidence interval estimate of the mean amount spent per day by a family of four visiting Niagara Falls. b. From your...
(5 points, 1 point each) According to survey data by Global Webindex, people spend an average...
(5 points, 1 point each) According to survey data by Global Webindex, people spend an average of 2 hours and 22 minutes (142 minutes) per day on social media. The sample standard deviation given was 43 minutes. Assume this data is normal distributed an answer the following questions. a. What is the probability that a randomly selected person spends more than 2 hours on social media? b. What is the probability that a randomly selected person spends exactly 90 minutes...
question 2-c and 2-d 2 .c) Test the given hypothesis. Assume that the population is normally...
question 2-c and 2-d
2 .c) Test the given hypothesis. Assume that the population is normally distributed and that the sample has been randomly selected. A manufacturer uses a new production method to produce steel rods. A random sample of 17 steel rods resulted in lengths with a standard deviation of 4.7 cm. At the 0.10 significance level, test the claim that the new production method has lengths with a standard deviation different from 3.5 cm, which was the standard...
A recent national survey showed that the mean amount of time high school students spent per...
A recent national survey showed that the mean amount of time high school students spent per day using Snapchat was 65 minutes, with a standard deviation of 9 minutes. Mrs. Jones, a school principal, surveyed 100 of her students and computed a sample mean of 67.6 minutes of daily Snapchat use. She would like to determine, with a .01 significance level, whether her school is significantly different from the national results. State the null and alternate hypotheses for this two-tailed...
QUESTION 2 Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on...
QUESTION 2 Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on the phone. The organization thinks that, currently, the mean is higher. Fifteen randomly chosen teenagers were asked how many hours per week they spend on the phone. The sample mean was 4.75 hours with a sample standard deviation of 2 hours. Assume that hours per week they spend on the phone are normally distributed. At a significance level of 5%, test the claim of...
A recent national survey found that high school students watched an average (mean) of 7.0 DVDs...
A recent national survey found that high school students watched an average (mean) of 7.0 DVDs per month with a population standard deviation of 0.60 hour. The distribution of DVDs watched per month follows the normal distribution. A random sample of 43 college students revealed that the mean number of DVDs watched last month was 6.50. At the 0.05 significance level, can we conclude that college students watch fewer DVDs a month than high school students? a. State the null...
1. state the hypothesis and identify the claim with the correct
hypothesis. Also one or two tailed test?
2. Compute the test value
3. Find the P-value
4. Make the decision to reject or not reject the null
hypothesis
5. Summarize the results
Question 4 of 10 (1 point) View problem in a pop-up Men spend an average of 29 minutes per day on weekends and holidays exercising and playing sports. They spend an average of 23 minutes per day...
14. According to a survey, the average college student spends only 2.2 hours on homework per day in the year 2000. To test if the amount of time spent on homework per day differed last year from 2000, a researcher decides to do a hypothesis test, at a 10% significance level. He surveys 25 college students randomly and asks them about the number of hours they spend on homework per day, on average, last year. From the data, the sample...
(5 points, 1 point each) According to survey data by Global Webindex, people spend an average of 2 hours and 22 minutes (142 minutes) per day on social media. The sample standard deviation given was 43 minutes. Assume this data is normal distributed an answer the following questions. a. What is the probability that a randomly selected person spends more than 2 hours on social media? b. What is the probability that a randomly selected person spends exactly 90 minutes...
question 2-c and 2-d
2 .c) Test the given hypothesis. Assume that the population is normally distributed and that the sample has been randomly selected. A manufacturer uses a new production method to produce steel rods. A random sample of 17 steel rods resulted in lengths with a standard deviation of 4.7 cm. At the 0.10 significance level, test the claim that the new production method has lengths with a standard deviation different from 3.5 cm, which was the standard...
QUESTION 2 Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on the phone. The organization thinks that, currently, the mean is higher. Fifteen randomly chosen teenagers were asked how many hours per week they spend on the phone. The sample mean was 4.75 hours with a sample standard deviation of 2 hours. Assume that hours per week they spend on the phone are normally distributed. At a significance level of 5%, test the claim of...
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