Homework Answers
We want to test whether there is a difference in the proportions of being bullied in private school vs public school. So our hypothesis is:
H0: p1 = p2
H1: p1 not equal p2
The hypothesis test is a two sided test (it can be seen from the alternative hypothesis)
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STEP 2. Make the decision to reject or fail to reject the null hypothesis of identical...
STEP 2. Make the decision to reject or fail to reject the null
hypothesis of identical school type distributions, and state the
conclusion in terms of the original problem. Use α=0.10α=0.10.
The following data set contains the reading speed (in words per minute) of second grade students. Do the reading speeds vary by school type? Use the Kruskal-Wallis test to analyze the results. Reading Speeds (wpm) Public School Private School Home School 65 110 81 92 104 60 87 76...
Previous Next Question 3 of 3 (1 point) View problem in a pop-up 11.1 Section Exercise...
Previous Next Question 3 of 3 (1 point) View problem in a pop-up 11.1 Section Exercise 12 (calc) The Head Start Program provides a wide range of services to low-income children up to the age of 5 and their families. Its goals are to provide services to improve social and learning skills and to improve health and nutrition status so that the participants can begin school on an equal footing with their more advantaged peers. The distribution of ages for...
please answer both questions Question 5 of 17 (1 point) View problem in a pop-Up Approximately...
please answer both questions
Question 5 of 17 (1 point) View problem in a pop-Up Approximately 10.8% of American high school students drop out of school before graduation. Assume the variable is binomial. Choose 18 students entering high school at random. Find these probabilities. Round intermediate calculations and final answers to three decimal places. Source: www.infoplease.com Part 1 No more than three drop out P(no more than three drop out)-0.878 Part 2 All 18 stay in school and graduate P(all...
Question 4 of 5 (1 point) View problem in a pop-up 9.2 Section Exercise 12a,b c,d...
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Question 12 of 31 (1 point) View problem in a pop-up 9.4 Section Exercise 16 National...
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Question 2 of 3 (1 point) View problem in a pop-up 11.1 Section Exercise 8 (calc)...
Question 2 of 3 (1 point) View problem in a pop-up 11.1 Section Exercise 8 (calc) Action % of time 70.8 8.2 9.0 12.0 On time National Aviation System delay Aircraft arriving late Other (because of weather and other conditions) Download data Source: www.transtats.bts.gov Records of 200 flights for a major airline company showed that 128 planes were on time; 32 were delayed because of weather, 16 because of a National Aviation System delay, and the rest because of arriving...
Next Previous 3 4 5 6 Question 2 of 6 (1 point) View problem in a pop-up According to the National Association of Home Builders, the average cost of building a home in the Northeast is $117.91 per square foot. A random sample of 37 new homes indicated that the mean cost was $121.14 and the standard deviation was $20. Can it be concluded that the mean Fo cost differs from $117.91, using the 0.10 level of significance? Use thP...
Question 2 of 10 (1 point) View problem in a pop-up The average "moviegoer" sees 8.5 movies a year. A moviegoer is defined as a person who sees at least one movie in a theater in a 12-month period. A random sample of 46 moviegoers from a large university revealed that the average number of movies seen per person was 10.1. The population standard deviation is 3.2 movies. At the 0.05 level of significance, can it be concluded that this...
Question 5 of 6 (1 point) View problem in a pop-up 8.2 Section Exercise 22 Ten years ago, the average acreage of farms in a certain geographic region was 65 acres. The standard deviation of the population was 7 acres. A recent study consisting of 26 farms showed that the average was 62.5 acres per farm. Test the claim, at 0.10, that the average has not changed by finding theP-value for the test. Assume o has not changed and the...
Question 3 of 6 (1 point) View problem in a pop-up 8.2 Section Exercise 8 The mean salary of federal government employees on the General Schedule is $59,593. The average salary of 33 state employees who do similar work is $58,930 witho = $1500. At the 0.10 level of significance, can it be concluded that state employees earn on average less than federal employees? Source: New York Times Almanac. Part 1 State the hypotheses and identify the claim with the...
STEP 2. Make the decision to reject or fail to reject the null
hypothesis of identical school type distributions, and state the
conclusion in terms of the original problem. Use α=0.10α=0.10.
The following data set contains the reading speed (in words per minute) of second grade students. Do the reading speeds vary by school type? Use the Kruskal-Wallis test to analyze the results. Reading Speeds (wpm) Public School Private School Home School 65 110 81 92 104 60 87 76...
Previous Next Question 3 of 3 (1 point) View problem in a pop-up 11.1 Section Exercise 12 (calc) The Head Start Program provides a wide range of services to low-income children up to the age of 5 and their families. Its goals are to provide services to improve social and learning skills and to improve health and nutrition status so that the participants can begin school on an equal footing with their more advantaged peers. The distribution of ages for...
please answer both questions
Question 5 of 17 (1 point) View problem in a pop-Up Approximately 10.8% of American high school students drop out of school before graduation. Assume the variable is binomial. Choose 18 students entering high school at random. Find these probabilities. Round intermediate calculations and final answers to three decimal places. Source: www.infoplease.com Part 1 No more than three drop out P(no more than three drop out)-0.878 Part 2 All 18 stay in school and graduate P(all...
Question 4 of 5 (1 point) View problem in a pop-up 9.2 Section Exercise 12a,b c,d (p-value, calc) PGA 1147 1344 9188 5687 10,508 4910 8553 7573 375 LPGA 48 76 863 100 1876 A 2029 4364 Download data for the mean earnings of PGA golfers. Assume the variables are normally distributed and the variances are unequal. Use Step 1: a. State the hypotheses and identify the claim with the correct hypothesis. between the means The null hypothesis H is...
Question 12 of 31 (1 point) View problem in a pop-up 9.4 Section Exercise 16 National statistics show that 23% of men smoke and 18.5% of women do. A random sample of 159 men indicated that 40 were smokers, and of 129 women surveyed, 17 indicated that they smoked. Part 1 out of 2 Construct a 90% confidence interval for the true difference in proportions of male and female smokers. Use P, for the proportion of men who smoke. Round...
Question 2 of 3 (1 point) View problem in a pop-up 11.1 Section Exercise 8 (calc) Action % of time 70.8 8.2 9.0 12.0 On time National Aviation System delay Aircraft arriving late Other (because of weather and other conditions) Download data Source: www.transtats.bts.gov Records of 200 flights for a major airline company showed that 128 planes were on time; 32 were delayed because of weather, 16 because of a National Aviation System delay, and the rest because of arriving...
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