1) Of 140 adults selected randomly from one town, 35 of them smoke. Construct a 99%...

1) Of 140 adults selected randomly from one town, 35 of them smoke. Construct a 99% confidence interval for the true percentage of all adults in the town that smoke.

In one town, we are 99% confident that the true percentage of adults who smoke is between ______% and _______%

2) A survey of 865 voters in one state reveals that 408 favor approval of an issue before the legislature. Construct the 95% confidence interval for the true proportion of all voters in the state who favor approval.

We are 95%confident that the true proportion of those who favor approval is between _____ and ________

Solutions

Expert Solution

Solution:-

1) we are 99% confident that the true percentage of adults who smoke is between 15.6% and 34.4%

2) We are 95%confident that the true proportion of those who favor approval is between 0.438 and 0.505

orchestra answered 1 year ago

Next > < Previous

Related Solutions

Of 250 adults selected randomly from one town, 72 of them smoke. Construct a 95% confidence...

Of 250 adults selected randomly from one town, 72 of them smoke. Construct a 95% confidence interval for the true percentage of all adults in the town that smoke

Of 147 adults selected randomly in one town, it was found that 31 of them smoke....

Of 147 adults selected randomly in one town, it was found that 31 of them smoke. If we were to calculate a 95% confidence interval for the proportion of people in this town who smoke, what is the margin of error? Round to 3 decimal places.

of 200 adults randomly selected from one town 43 of them smoke. find the best point...

of 200 adults randomly selected from one town 43 of them smoke. find the best point estimate for the proportion of all adults in town who smoke. for a 95% confidence interval for the true proportion of all adults in the town who smoke, what is the margin of error ? round up to three decimal places.

Of 94 adults selected randomly from one town, 62 have health insurance. Find a 90% confidence...

Of 94 adults selected randomly from one town, 62 have health insurance. Find a 90% confidence interval for the proportion of all adults in the town who have health insurance.

9) In a sample of 400 people selected randomly from one town, it is found that...

9) In a sample of 400 people selected randomly from one town, it is found that 130 of them are Gamecock Fans. At the 0.05 significance level, test the claim that the proportion of all people in the town who are Gamecock fans is 27%. A] What type of statistical test can be used here? a. Z-test of proportions c. F Test e. Either c2 or λ Test b. a-Test of proportions d. Either T or F-Test f. T-Test...

1. Assume that when adults with smartphones are randomly selected, 56% use them in meetings or...

1. Assume that when adults with smartphones are randomly selected, 56% use them in meetings or classes. If 5 adult smartphone users are randomly selected, find the probability that at least 2 of them use their smartphones in meetings or classes. 2. Assume that when adults with smartphones are randomly selected, 56% use them in meetings or classes. If 12 adult smartphone users are randomly selected, find the probability that fewer than 4 of them use their smartphones in meetings...

1) assume that when adults with smartphones are randomly selected, 48% use them in meetings or...

1) assume that when adults with smartphones are randomly selected, 48% use them in meetings or classes. If 6 adult smartphone users are randomly selected, find the probability that at least 3 of them use their smartphones in meetings or classes the probability is ? 2) assume that hybridization experiments are conducted with peas having the property that for offspring, there is a 0.25 probability that a pea has green pods. Assume that the offspring peas are randomly selected in...

assume that when adults with smart phones are randomly selected, 54% of them and use them...

assume that when adults with smart phones are randomly selected, 54% of them and use them in meetings. If 12 adult smartphone users are randomly selected, find the probability that fewer than 4 of them use their smart phones in meetings or classes.

Assume that when adults with smartphones are randomly selected, 49% of them use them in meetings...

Assume that when adults with smartphones are randomly selected, 49% of them use them in meetings or classes. If 30 adult smartphone users are randomly selected, find the probability that exactly 18 of them use their smartphones in meetings or classes The probability is ____

- Assume that when adults with smartphones are randomly selected, 65% use them in meetings or...

- Assume that when adults with smartphones are randomly selected, 65% use them in meetings or classes. If 5 adult smartphone users are randomly selected, find the probability that exactly 3 of them use their smartphones in meetings or classes. - Assume that when adults with smartphones are randomly selected, 41% use them in meetings or classes. If 20 adult smartphone users are randomly selected, find the probability that exactly 13 of them use their smartphones in meetings or classes....

Subjects