Question

In: Statistics and Probability

a recent study in 2016 says 72% of students spend at least 5 hours on electronics...

a recent study in 2016 says 72% of students spend at least 5 hours on electronics per day. the sample has 100 observations and 75 out of 100 students stated that they spend at least 5 hours on electronics every day. formulate a hypothesis test that can be used to determine if the proportion of college students who spend at least five hours a day on electronics has increased. what is the z score and what is your conclusion at significance= 0.01? confirm using p value.

Solutions

Expert Solution


orchestra answered 2 years ago
Next > < Previous

Related Solutions

A recent study of college students indicates that 30% of all college students had at least...
A recent study of college students indicates that 30% of all college students had at least one tattoo. A small private college decided to randomly and independently sample 15 of their students and ask if they have a tattoo. Find the standard deviation for this distribution. Select one: 4.50 1.77 3.55 3.15
A recent study claimed that at least 15% of junior high students are overweight. In a...
A recent study claimed that at least 15% of junior high students are overweight. In a sample of 160 students, 18 were found to be overweight. At α = 0.05, test the claim. Identify the claim, state the null and alternative hypotheses, find the critical value, find the standardized test statistic, make a decision on the null hypothesis (you may use a P-Value instead of the standardized test statistic), write an interpretation statement on the decision.
A recent study claimed that at least 15% of junior high students are overweight. In a...
A recent study claimed that at least 15% of junior high students are overweight. In a sample of 160 students, 18 were found to be overweight. Test the claim, using α = 0.05. State the null and alternative hypotheses for the test. [3 marks] (b) Calculate the value of the test statistic for this test. [2 marks] (c) Calculate the p-value for this test. [2 marks] (d) State the conclusion of this test. Give a reason for your answer
In a recent study of 53 ninth-grade students, the mean number of hours per week that...
In a recent study of 53 ninth-grade students, the mean number of hours per week that they played video games was 72. The standard deviation of the population was 4.3. Find the 84% confidence interval for the mean of the time playing video games.
A nationwide survey of college students was conducted and found that students spend two hours per...
A nationwide survey of college students was conducted and found that students spend two hours per class hour studying. A professor at your university wants to determine whether the time students spend at your university is significantly different from the two hours. A random sample of 36 statistics students is carried out and the findings indicate an average of 1.75 hours. Assume a populatoin standard deviation of 0.5 hours. Using a level of significance of 0.05: 1. Construct a 95%...
. A study was conducted to examine the correlation between number of study hours and students...
. A study was conducted to examine the correlation between number of study hours and students grads in exam. Study hours for students: 2, 3, 5, 6, 8, 10, 10, 2, 5, 6, 5, 3, 7, 6, 2, 7, 6, 8, 2, 5 Grads in exam for students: 3, 4, 6, 7, 8, 10, 9, 8, 3, 6, 5, 4, 6, 6, 3, 7, 6, 3, 4, 5 1- as ungrouped data find the frequency, accumulated relative frequency, and accumulative...
. A study was conducted to examine the correlation between number of study hours and students...
. A study was conducted to examine the correlation between number of study hours and students grads in exam. Study hors for students: 2, 3, 5, 6, 8, 10, 10, 2, 5, 6, 5, 3, 7, 6, 2, 7, 6, 8, 2, 5 Grads in exam for students: 3, 4, 6, 7, 8, 10, 9, 8, 3, 6, 5, 4, 6, 6, 3, 7, 6, 3, 4, 5 1- as ungrouped data find the frequency, accumulated relative frequency, and accumulative...
According to a recent survey conducted at a local college, we found students spend an average...
According to a recent survey conducted at a local college, we found students spend an average of 19.5 hours on their smartphone per week, with a standard deviation of 3.5 hours. Assuming the data follows the normal distribution. a) How many percent of students in this college spend more than 15 hours on their smartphone per week? b) If we randomly select 12 students, what is the probability that the average of these students spending on the internet is more...
Based on all student records at Camford University, students spend an average of 6.00 hours per...
Based on all student records at Camford University, students spend an average of 6.00 hours per week playing organized sports. The population’s standard deviation is 3.40 hours per week. Based on a sample of 49 students, Healthy Lifestyles Incorporated (HLI) would like to apply the central limit theorem to make various estimates. a) Compute the standard error of the sample mean. (Round your answer to 2 decimal places.) Standard error b) What is the chance HLI will find a sample...
A researcher wants to support the claim that students spend less than 7 hours per week...
A researcher wants to support the claim that students spend less than 7 hours per week doing homework. The sample size for the test is 64 students. The drawing shown diagrams a hypothesis test for population mean under the Null Hypothesis (top drawing) and under the Alternative Hypothesis (bottom drawing). State the Null and Alternative Hypotheses. Ha : Ho : What is the design probability associated with Type I error? What is the design probability associated with Type II error?...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT