You are interested in knowing the proportion of people that are observing the CDC guidelines for...

You are interested in knowing the proportion of people that are observing the CDC guidelines for social distancing during the COVID-19 pandemic. You survey 100 randomly selected people and find that 80 have followed the guidelines.

Construct a 95% confidence interval around the unknown true proportion of people following the guidelines. CALCULATE THE UPPER LIMIT in this question. Use 4 digits of precision

Use the R code below to help you.

> qnorm(0.90)
[1] 1.282
> qnorm(0.95)
[1] 1.645
> qnorm(0.975)
[1] 1.960
> qnorm(0.99)
[1] 2.326
> pnorm(0.90)
[1] 0.8159
> pnorm(0.95)
[1] 0.8289
> pnorm(0.975)
[1] 0.8352
> pnorm(0.99)
[1] 0.8389

Solutions

Expert Solution

Let p denotes the true proportion of people who have followed the guidelines.

To find the upper limit, use qnorm(0.975) = 1.96

orchestra answered 11 months ago

Next > < Previous

Related Solutions

You are interested in knowing whether wealthier people are happier. You collected data from fifty people...

You are interested in knowing whether wealthier people are happier. You collected data from fifty people about their incomes and their overall happiness levels on a scale of 1 to 10. Upon analyzing the results, you find that the correlation coefficient has a value of −0.25. On the basis of this data, respond to the following: How would you interpret the correlation coefficient in terms of strength and direction? How would the results be affected if you increased the number...

1. A marketing research team at Optimum Nutrition is interested in knowing the proportion of Americans...

1. A marketing research team at Optimum Nutrition is interested in knowing the proportion of Americans who exercise at least three times a week. They send out a survey asking "Do you exercise more than 3 times a week?" to over 5,000 random Americans. Given the following scenario, is this problem a One Mean, One Proportion, Two Independent Means, or Paired Means? Group of answer choices a. One Mean b. Two Independent Means c. Paired Means d. One Proportion 2....

Katie works in the film industry and was interested in knowing whether people go to the...

Katie works in the film industry and was interested in knowing whether people go to the movies more often in the summer than they do in the winter (assume these data were collected prior to the current pandemic). She collected data from ten people, asking each of them to report how many movies they had gone to the previous summer, and then followed up with them later that year to find out how many movies they went to that winter....

Katie works in the film industry and was interested in knowing whether people go to the...

A psychologist is interested in constructing a 95% confidence interval for the proportion of people who...

A psychologist is interested in constructing a 95% confidence interval for the proportion of people who accept the theory that a person's spirit is no more than the complicated network of neurons in the brain. 71 of the 811 randomly selected people who were surveyed agreed with this theory. Round answers to 4 decimal places where possible. a. With 95% confidence the proportion of all people who accept the theory that a person's spirit is no more than the complicated...

A psychologist is interested in constructing a 99% confidence interval for the proportion of people who...

A psychologist is interested in constructing a 99% confidence interval for the proportion of people who accept the theory that a person's spirit is no more than the complicated network of neurons in the brain. 57 of the 708 randomly selected people who were surveyed agreed with this theory. Round answers to 4 decimal places where possible. a. With 99% confidence the proportion of all people who accept the theory that a person's spirit is no more than the complicated...

A psychologist is interested in constructing a 90% confidence interval for the proportion of people who...

A psychologist is interested in constructing a 90% confidence interval for the proportion of people who accept the theory that a person's spirit is no more than the complicated network of neurons in the brain. 69 of the 823 randomly selected people who were surveyed agreed with this theory. a. With 90% confidence the proportion of all people who accept the theory that a person's spirit is no more than the complicated network of neurons in the brain is betweenand...

A psychologist is interested in constructing a 90% confidence interval for the proportion of people who...

A psychologist is interested in constructing a 90% confidence interval for the proportion of people who accept the theory that a person's spirit is no more than the complicated network of neurons in the brain. 64 of the 765 randomly selected people who were surveyed agreed with this theory. Round answers to 4 decimal places where possible. a. With 90% confidence the proportion of all people who accept the theory that a person's spirit is no more than the complicated...

A psychologist is interested in constructing a 95% confidence interval for the proportion of people who...

A psychologist is interested in constructing a 95% confidence interval for the proportion of people who accept the theory that a person's spirit is no more than the complicated network of neurons in the brain. 67 of the 748 randomly selected people who were surveyed agreed with this theory. a. With 95% confidence the proportion of all people who accept the theory that a person's spirit is no more than the complicated network of neurons in the brain is between...

A psychologist is interested in constructing a 99% confidence interval for the proportion of people who...

A psychologist is interested in constructing a 99% confidence interval for the proportion of people who accept the theory that a person's spirit is no more than the complicated network of neurons in the brain. 56 of the 754 randomly selected people who were surveyed agreed with this theory. a. With 99% confidence the proportion of all people who accept the theory that a person's spirit is no more than the complicated network of neurons in the brain is between___...

Subjects