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anyone hlep me with this four problme please!!! 6) A random sample of high school girls...
anyone hlep me with this four problme please!!!
6) A random sample of high school girls were asked how many hours per week they use social media. The sample mean of the 25 girls was 9 with standard deviation 2.7. What is the 90% confidence interval for the true mean for the hours per week high school girls use social media? Assume the population is normally distributed. 7) A random sample of 40 men were asked how if they enjoyed...
nerate a Confidence Interval Using the Empirical Rule Question In a food questionnaire, a random sample of...
nerate a Confidence Interval Using the Empirical Rule Question In a food questionnaire, a random sample of teenagers were asked whether they like pineapple pizza. The questionnaire resulted in a sample proportion of p′=0.43, with a sampling standard deviation of σp′=0.06, who like this type of pizza. Write a 99.7% confidence interval for the true proportion of teenagers who like pineapple pizza.
7) A random sample of 40 men were asked how if they enjoyed watching sports more...
7) A random sample of 40 men were asked how if they enjoyed watching sports more than movies and 64% percent reported that they did. What is the 95% confidence interval of the true proportion of men who enjoy watching sports more than movies?
In a random sample of 325 students at a university, 266 stated that they were nonsmokers....
In a random sample of 325 students at a university, 266 stated that they were nonsmokers. Based on this sample, compute a 95% confidence interval for the proportion of all students at the university who are nonsmokers. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to two decimal places. What is the lower limit of the 95% confidence interval? What is the upper limit of the 95% confidence interval?
Please answer questions 4 & 5 Information The following applies to Questions 1 to 5: In...
Please answer questions 4 & 5
Information The following applies to Questions 1 to 5: In a random sample of 150 Manitoba high school students,it is found that 66 of them have enrolled in university Question 1 (1 point) what is the margin of error for a 97% confidence interval for the true proportion of Manitoba high school students who enroll in university? Report your answer rounded to 3 decimal places. Your Answer: 0.144 Answer
1. A simple random sample of 800 automobile owners in a large state revealed that 480...
1. A simple random sample of 800 automobile owners in a large state revealed that 480 purchased cars from Japanese or European car companies. Construct a 95% confidence interval for the proportion of all automobile owners in that state who purchase cars from Japanese or European car companies. 2. There are 400 students currently studying statistics at Breakport University. The average GPA of a random sample of 50 of these students was 3.2 with a sample standard deviation of 0.2....
Suppose that a random sample of 100 part-time college students is 68% female. In this activity,...
Suppose that a random sample of 100 part-time college students is 68% female. In this activity, we calculate the 95% confidence interval for the proportion of all part-time college students that are female. Recall that the 95% confidence interval is: sample proportion ± 2(SE) where SE is the standard error (or standard deviation). question 2: State the confidence interval. Then convert the values to percentages and interpret the confidence interval in context.
Long answer question [7 marks] The university would like to conduct a study to estimate the...
Long answer question [7 marks] The university would like to conduct a study to estimate the true proportion of all university students who have student loans. According to the study, in a random sample of 215 university students, 86 have student loans. (a) Construct a 95% confidence interval for estimating the true proportion of all university students who have student loans (2 marks) (b) Provide an interpretation of the confidence interval in part (a). (1mark) (c) Conduct an appropriate hypothesis...
(A) Mrs. Smith took a random sample of students after winter break and asked if they...
(A) Mrs. Smith took a random sample of students after winter break and asked if they enjoyed their break. She found that 70% of the 40 students she asked said yes. Estimate and interpret a 90% confidence interval for the proportion of all students who enjoyed their break. (B) How large of a sample will allow Mrs. Smith to get a margin of error of 2.5% at a 95% confidence level? Remember to SHOW your work with the numbers plugged...
(A) Mrs. Smith took a random sample of students after winter break and asked if they...
(A) Mrs. Smith took a random sample of students after winter break and asked if they enjoyed their break. She found that 70% of the 40 students she asked said yes. Estimate and interpret a 90% confidence interval for the proportion of all students who enjoyed their break. (B) How large of a sample will allow Mrs. Smith to get a margin of error of 2.5% at a 95% confidence level? Remember to SHOW your work with the numbers plugged...
anyone hlep me with this four problme please!!!
6) A random sample of high school girls were asked how many hours per week they use social media. The sample mean of the 25 girls was 9 with standard deviation 2.7. What is the 90% confidence interval for the true mean for the hours per week high school girls use social media? Assume the population is normally distributed. 7) A random sample of 40 men were asked how if they enjoyed...
Please answer questions 4 & 5
Information The following applies to Questions 1 to 5: In a random sample of 150 Manitoba high school students,it is found that 66 of them have enrolled in university Question 1 (1 point) what is the margin of error for a 97% confidence interval for the true proportion of Manitoba high school students who enroll in university? Report your answer rounded to 3 decimal places. Your Answer: 0.144 Answer
Long answer question [7 marks] The university would like to conduct a study to estimate the true proportion of all university students who have student loans. According to the study, in a random sample of 215 university students, 86 have student loans. (a) Construct a 95% confidence interval for estimating the true proportion of all university students who have student loans (2 marks) (b) Provide an interpretation of the confidence interval in part (a). (1mark) (c) Conduct an appropriate hypothesis...
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