In a recent survey of 300 owners of Android phones, 171 of them planned to get...

In a recent survey of 300 owners of Android phones, 171 of them planned to get another Android as their next phone. Construct a 95% confidence interval for the proportions of Android users who plan to get another Android.

Expert Solution

We have given here,

x=171
n=300
Estimate for sample proportion

Level of significance is =1-0.95=0.05
Z critical value(using Z table)=1.96

orchestra answered 3 years ago

According to a survey, 21% of the car owners said that they get the maintenance service...

According to a survey, 21% of the car owners said that they get the maintenance service done on their cars according to the schedule recommended by the auto company. Suppose that this result is true for the current population of car owners. Find to 3 decimal places the probability that exactly 4 car owners in a random sample of 13 get the maintenance service done on their cars according to the schedule recommended by the auto company. Use the binomial...

In a survey of 356 randomly selected gun owners, it was found that 82 of them...

In a survey of 356 randomly selected gun owners, it was found that 82 of them said they owned a gun primarily for protection. Find the margin of error and 95% confidence interval for the percentage of all gun owners who would say that they own a gun primarily for protection. Round all answers to 3 decimal places. Margin of Error (as a percentage): % Confidence Interval: % to %

According to a recent survey, women chat on their mobile phones more than do men. To...

According to a recent survey, women chat on their mobile phones more than do men. To determine if the same patterns also exist in colleges, Irina takes a random sample of 40 male students and 40 female students in her college. She finds that female students chatted for a sample average of 820 minutes per month, with a sample standard deviation of 160 minutes. Male students, on the other hand, chatted for a sample average of 760 minutes per month,...

In a recent survey, 145 of 457employees responded that they typically took work with them on...

In a recent survey, 145 of 457employees responded that they typically took work with them on vacation and 68 responded that there are unwritten and unspoken expectations that they stay connected. Complete parts (a) through (d) below. a. Construct a 95%confidence interval estimate for the population proportion of employees who typically take work with them on vacation. (Round to four decimal places as needed.) b. Construct a 95 confidence interval estimate for the population proportion of employees who said that...

In a recent survey of 200 Instagram users, it was found that 71% of them were...

In a recent survey of 200 Instagram users, it was found that 71% of them were under the age of 35. Create and interpret a 95% Confidence Interval for the percentage of Instagram under the age of 35 using PANIC.

A recent survey of 300 potential clients showed the following results related to the preferences of...

A recent survey of 300 potential clients showed the following results related to the preferences of the consumers in relation to the tourist activity of the center. He likes the planned activities - 63 He does not like planned activities - 135 They are not safe - 78 They did not respond - 24 1. What name does the table receive? 2. Design a bar graph to represent the results of the survey 3. Draw a pie chart that shows...

The proportion of customers who are completely satisfied in a recent satisfaction survey of 300 customers...

The proportion of customers who are completely satisfied in a recent satisfaction survey of 300 customers at XYC Inc. is found to be 0.26. (6 points) Test the hypothesis that the population proportion of customers who are completely satisfied is greater than 0.22 using the critical value approach and a 0.05 level of significance. Test the hypothesis that the population proportion of customers who are completely satisfied is less than 0.30 using the p-value approach and a 0.05 level of...

B. The proportion of customers who are completely satisfied in a recent satisfaction survey of 300...

B. The proportion of customers who are completely satisfied in a recent satisfaction survey of 300 customers at XYC Inc. is found to be 0.26. Test the hypothesis that the population proportion of customers who are completely satisfied is greater than 0.22 using the critical value approach and a 0.05 level of significance. e Test the hypothesis that the population proportion of customers who are completely satisfied is less than 0.30 using the p-value approach and a 0.05 level of...

A recent survey of 1050 employees found that 24% of them would lay off their bosses...

A recent survey of 1050 employees found that 24% of them would lay off their bosses if they could. Complete parts a through d below based on a random sample of 10 employees. A.) What is the probability that exactly three employees would lay off their boss? B.) What is the probability that three or fewer employees would lay off their bosses? C.)What is the probability that five or more employees would lay off their bosses? D.) What are the...

In a recent survey of 4276 randomly selected households showed that 3549 of them had telephones....

In a recent survey of 4276 randomly selected households showed that 3549 of them had telephones. Using these results, construct a 99% confidence interval estimate of the true proportion of households with telephones. Use the PANIC acronym

Question